Part 1 (Categorized)

  I.  VARIABLES RELATED TO TIME
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Time           Time         s            Time of measurement [since the start date/time reported in the netCDF data file's Time "units" attribute (UTC)]
  Time           base_time    s            Reference Start Time (Seconds since Jan 1, 1970) [Note: this is a single scalar, not a "record" variable.]
  Time           time_offset  s            Time offset from reference time (Seconds since base_time)
  Time           HOUR         hour         Raw Tape Time Component
  Time           MINUTE       minute       Raw Tape Time Component
  Time           SECOND       s            Raw Tape Time Component
  Time           YEAR         year         Raw Tape Time Component @ start time
  Time           MONTH        month        Raw Tape Time Component @ start time
  Time           DAY          day          Raw Tape Time Component @ start time

  II.  VARIABLES OBTAINED FROM THE INERTIAL REFERENCE SYSTEM
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Inertial Ref.  LAT          degree_N     Inertial Latitude
  Inertial Ref.  LON          degree_E     Inertial Longitude
  Inertial Ref.  THDG         degree_T     Aircraft True Heading Angle
  Inertial Ref.  PITCH        degree       Aircraft Pitch Angle
  Inertial Ref.  ROLL         degree       Aircraft Roll Angle
  Inertial Ref.  ACINS        m/s2         Aircraft Vertical Acceleration
  Inertial Ref.  VSPD         m/s          IRS-Computed Aircraft Vertical Velocity
  Inertial Ref.  WP3          m/s          Damped Aircraft Vertical Velocity
  Inertial Ref.  ALT          m            Inertial Altitude
  Inertial Ref.  GSF          m/s          Inertial Ground Speed
  Inertial Ref.  VEW          m/s          Inertial Ground Speed Vector, East Comp.
  Inertial Ref.  VNS          m/s          Inertial Ground Speed Vector, North Comp.
  Inertial Ref.  BLATA        g            Inertial, Lateral Body Acceleration
  Inertial Ref.  BLONA        g            Inertial, Longitudinal Body Acceleration
  Inertial Ref.  BNORMA       g            Inertial, Normal Body Acceleration
  Inertial Ref.  BPITCHR      degree/s     Inertial, Body Pitch Rate
  Inertial Ref.  BROLLR       degree/s     Inertial, Body Roll Rate
  Inertial Ref.  BYAWR        degree/s     Inertial, Body Yaw Rate

  III.  VARIABLES OBTAINED FROM THE GLOBAL POSITIONING SYSTEM (GPS)
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  GPS Reference  GLAT         degree_N     GPS Latitude
  GPS Reference  GLON         degree_E     GPS Longitude
  GPS Reference  GGSF         m/s          GPS Ground Speed
  GPS Reference  GVEW         m/s          GPS Ground Speed Vector, East Component
  GPS Reference  GVNS         m/s          GPS Ground Speed Vector, North Component
  GPS Reference  GVZI         m/s          GPS-Computed Aircraft Vertical Velocity
  GPS Reference  GALT         m            GPS Altitude
  GPS Reference  GMODE        none         GPS Mode
  GPS Reference  GSTAT        none         GPS Status

  IV.  COMBINED REFERENCE VARIABLES (FROM IRS AND GPS)
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Reference      LATC         degree_N     GPS-Corrected Latitude
  Reference      LONC         degree_E     GPS-Corrected Longitude
  Reference      VNSC         m/s          GPS-Corrected Ground Speed Vector, North Comp.
  Reference      VEWC         m/s          GPS-Corrected Ground Speed Vector, East Comp.
  Reference      ALTX         m            Reference Altitude: MSL

  V.  ALTITUDE AND POSITION VARIABLES
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Derived Posn.  DEI          km           Distance East of Reference
  Derived Posn.  DNI          km           Distance North of Reference
  Derived Posn.  FXAZIM       degree       Radial Azimuth from Fixed Reference
  Derived Posn.  FXDIST       km           Radial Distance from Fixed Reference
  Position       HGM          m            Geometric (Radio) Altitude
  Position       HGME         m            Geometric (Radar) Altitude (APN-159)
  Position       HGM232       m            Geometric (Radar) Altitude (APN-232)
  Position       PALT         m            NACA Pressure Altitude
  Position       PALTF        feet         NACA Pressure Altitude
  Position       HI3          m            Pressure-Damped Inertial Altitude

  VI.  AIRCRAFT AND METEOROLOGICAL STATE VARIABLES
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Uncorr. Raw    ADIF         mbar         Vertical Differential Pressure, Boom
  Uncorr. Raw    ADIFR        mbar         Vertical Differential Pressure, Radome
  Uncorr. Raw    BDIF         mbar         Horizontal Differential Pressure, Boom
  Uncorr. Raw    BDIFR        mbar         Horizontal Differential Pressure, Radome
  State          ATTACK       degree       Attack Angle, Reference
  State          AKDF         degree       Attack Angle, Boom Diff. Pressure
  State          AKRD         degree       Attack Angle, Radome Diff. Pressure
  State          SSLIP        degree       Sideslip Angle, Reference
  State          SSDF         degree       Sideslip Angle, Boom Diff. Pressure
  State          SSRD         degree       Sideslip Angle, Radome Diff. Pressure
  State          PCAB         mbar         Interior Cabin Static Pressure
  Uncorr. Raw    PSB          mbar         Raw Static Pressure, Boom
  Uncorr. Raw    PSF          mbar         Raw Static Pressure, Fuselage
  Uncorr. Raw    PSFD         mbar         Raw Static Pressure, Fuselage Digital
  Uncorr. Raw    PSW          mbar         Raw Static Pressure, Wing
  Reference      PSX          mbar         Raw Static Pressure, Reference
  State          PSBC         mbar         Corrected Static Pressure, Boom
  State          PSFC         mbar         Corrected Static Pressure, Fuselage
  State          PSFDC        mbar         Corrected Static Presr., Fuselage Digital
  State          PSWC         mbar         Corrected Static Pressure, Wing
  Reference      PSXC         mbar         Corrected Static Pressure, Reference
  Uncorr. Raw    QCB          mbar         Raw Dynamic Pressure, Boom
  Uncorr. Raw    QCF          mbar         Raw Dynamic Pressure, Fuselage
  Uncorr. Raw    QCR          mbar         Raw Dynamic Pressure, Radome
  Uncorr. Raw    QCW          mbar         Raw Dynamic Pressure, Wing
  Reference      QCX          mbar         Raw Dynamic Pressure, Reference
  State          QCBC         mbar         Corrected Dynamic Pressure, Boom
  State          QCFC         mbar         Corrected Dynamic Pressure, Fuselage
  State          QCRC         mbar         Corrected Dynamic Pressure, Radome
  State          QCWC         mbar         Corrected Dynamic Pressure, Wing
  Reference      QCXC         mbar         Corrected Dynamic Pressure, Reference
  Uncorr. Raw    TTB          deg_C        Total Temperature, Radome
  Uncorr. Raw    TTF          deg_C        Total Temperature, Fuselage
  Uncorr. Raw    TTFH         deg_C        Total Temperature, Deiced Fuselage
  Uncorr. Raw    TTRF         deg_C        Total Temperature, Reverse Flow
  Uncorr. Raw    TTRL         deg_C        Total Temperature, Radome Left
  Uncorr. Raw    TTRR         deg_C        Total Temperature, Radome Right
  Uncorr. Raw    TTW          deg_C        Total Temperature, Wing
  Uncorr. Raw    TTWH         deg_C        Total Temperature, Deiced Wing
  Reference      TTX          deg_C        Total Temperature, Reference
  Uncorr. Raw    DPB          deg_C        Dew/Frost Point Temperature, Fuselage Bot.
  State          DPT          deg_C        Dew/Frost Point Temperature, Fuselage Top
  Uncorr. Raw    VCRH         deg_C        Dew/Frost Point Temperature, Cryogenic
  Uncorr. Raw    CRHP         mbar         Cryogenic Hygrometer Inlet Pressure
  State          FPCRC        deg_C        Frost Point Temperature, Cryogenic
  Reference      DPX          deg_C        Dew/Frost Point Temperature, Reference
  State          DPBC         deg_C        Dew Point Temperature, T-Electric Bottom
  State          DPCRC        deg_C        Dew Point Temperature, Cryogenic
  State          DPTC         deg_C        Dew Point Temperature, T-Electric Top
  Reference      DPXC         deg_C        Dew Point Temperature, Reference
  Uncorr. Raw    VLA          Vdc          Raw Lyman-alpha Hygrometer Output
  Uncorr. Raw    VLA1         Vdc          Raw Lyman-alpha Hygrometer Output (2nd)

  VII.  THERMODYNAMIC VARIABLES
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Thermodynamic  ATB          deg_C        Ambient Temperature, Radome
  Thermodynamic  ATF          deg_C        Ambient Temperature, Fuselage
  Thermodynamic  ATFH         deg_C        Ambient Temperature, Deiced Fuselage
  Thermodynamic  ATRF         deg_C        Ambient Temperature, Reverse Flow
  Thermodynamic  ATRL         deg_C        Ambient Temperature, Radome Left
  Thermodynamic  ATRR         deg_C        Ambient Temperature, Radome Right
  Thermodynamic  ATW          deg_C        Ambient Temperature, Wing
  Thermodynamic  ATWH         deg_C        Ambient Temperature, Deiced Wing
  Reference      ATX          deg_C        Ambient Temperature, Reference
  Thermodynamic  TASB         m/s          Aircraft True Airspeed, Boom
  Thermodynamic  TASF         m/s          Aircraft True Airspeed, Fuselage
  Thermodynamic  TASR         m/s          Aircraft True Airspeed, Radome
  Thermodynamic  TASW         m/s          Aircraft True Airspeed, Wing
  Reference      TASX         m/s          Aircraft True Airspeed, Reference
  Thermodynamic  TASHC        m/s          Aircraft True Airspeed, Humidity Corrected
  Thermodynamic  EDPC         mbar         Ambient Water Vapor Pressure, Reference
  Thermodynamic  THETA        K            Potential Temperature
  Thermodynamic  THETAE       K            Equivalent Potential Temperature
  Thermodynamic  TVIR         deg_C        Virtual Temperature
  Thermodynamic  THETAV       K            Virtual Potential Temperature
  Thermodynamic  RHUM         %            Relative Humidity
  Thermodynamic  RHOCR        gram/m3      Absolute Humidity, Cryogenic
  Thermodynamic  RHODB        gram/m3      Absolute Humidity, T-Electric Bottom
  Thermodynamic  RHODT        gram/m3      Absolute Humidity, T-Electric Top
  Thermodynamic  RHOLA        gram/m3      Absolute Humidity, Lyman-alpha
  Thermodynamic  RHOLA1       gram/m3      Absolute Humidity, Lyman-alpha
  Thermodynamic  SPHUM        gram/kg      Specific Humidity
  Thermodynamic  MR           gram/kg      Mixing Ratio, T-Electric
  Thermodynamic  MRCR         gram/kg      Mixing Ratio, Cryogenic
  Thermodynamic  MRLA         gram/kg      Mixing Ratio, Lyman-alpha
  Thermodynamic  MRLA1        gram/kg      Mixing Ratio, Lyman-alpha (2nd unit)
  Thermodynamic  PSURF        mbar         Calculated Surface Pressure

  VIII.  WIND VARIABLES
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Wind           UI           M/s          Wind Vector, East Component
  Wind           VI           m/s          Wind Vector, North Component
  Wind           WI           m/s          Wind Vector, Vertical Gust Component
  Wind           WS           m/s          Horizontal Wind Speed
  Wind           WD           degree_T     Horizontal Wind Direction
  Wind           UX           m/s          Wind Vector, Longitudinal Component
  Wind           VY           m/s          Wind Vector, Lateral Component
  Wind           UIC          m/s          GPS-Corrected Wind Vector, East Component
  Wind           VIC          m/s          GPS-Corrected Wind Vector, North Component
  Wind           WIC          m/s          GPS-Corrected Wind Vector, Vertical Gust Component
  Wind           WSC          m/s          GPS-Corrected Horizontal Wind Speed
  Wind           WDC          degree_T     GPS-Corrected Horizontal Wind Direction
  Wind           UXC          m/s          GPS-Corrected Wind Vector, Longitudinal Component
  Wind           VYC          m/s          GPS-Corrected Wind Vector, Lateral Component

  IX.  RADIATION VARIABLES
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Radiation      RSTB         deg_C        Radiometric Surface Temperature
  Radiation      RSTT         deg_C        Radiometric Sky/Cloud-Base Temperature
  Uncorr. Raw    TCAVB        deg_C        Cavity Temperature, Bottom PRT-5 (obs.)
  Uncorr. Raw    TCAVT        deg_C        Cavity Temperature, Top PRT-5 (obs.)
  Uncorr. Raw    IRB          W/m2         Raw Infrared Irradiance, Bottom
  Uncorr. Raw    IRT          W/m2         Raw Infrared Irradiance, Top
  Uncorr. Raw    DTB          deg_C        Pyrgeometer Dome Temperature, Bottom
  Uncorr. Raw    DTT          deg_C        Pyrgeometer Dome Temperature, Top
  Uncorr. Raw    STB          deg_C        Pyrgeometer Sink Temperature, Bottom
  Uncorr. Raw    STT          deg_C        Pyrgeometer Sink Temperature, Top
  Radiation      IRBC         W/m2         Corrected Infrared Irradiance, Bottom
  Radiation      IRTC         W/m2         Corrected Infrared Irradiance, Top
  Radiation      SWB          W/m2         Shortwave Irradiance, Bottom
  Radiation      SWT          W/m2         Shortwave Irradiance, Top
  Radiation      SWTC         W/m2         Corrected Shortwave Irradiance, Top
  Radiation      UVB          W/m2         Ultraviolet Irradiance, Bottom
  Radiation      UVT          W/m2         Ultraviolet Irradiance, Top

  X.  CLOUD PHYSICS VARIABLES
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Uncorr. Raw    LWC          gram/m3      Raw C-T Liquid Water Content
  Cloud Physics  LWCC         gram/m3      Corrected C-T Liquid Water Content
  Uncorr. Raw    PLWC         W            Raw PMS-King Liquid Water Content Output
  Cloud Physics  PLWCC        gram/m3      Corrected PMS-King Liquid Water Content
  Uncorr. Raw    RICE         Vdc          Raw Icing-Rate Indicator
  Cloud Physics  SCLWC        gram/m3      Derived Supercooled Liquid Water Content

  XI.  CLOUD PHYSICS VARIABLES FROM PMS 1-D AND 2-D PROBES
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  PMS Probe      A200X        count        200X Raw Accumulation
  PMS Probe      A200Y        count        200Y Raw Accumulation
  PMS Probe      A260X        count        260X Raw Accumulation
  PMS Probe      AF300        count        FSSP-300 Raw Accumulation
  PMS Probe      AFSSP        count        FSSP-100 Raw Accumulation
  PMS Probe      APCAS        count        PCAS Particle Spacing
  PMS Probe      C200X        #/L          200X Corrected Concentration
  PMS Probe      C200Y        #/L          200Y Corrected Concentration
  PMS Probe      C260X        #/L          260X Corrected Concentration
  PMS Probe      CF300        #/cm3        FSSP-300 Corrected Concentration
  PMS Probe      CFSSP        #/cm3        FSSP-100 Corrected Concentration
  PMS Probe      CPCAS        #/cm3        PCAS Corrected Concentration
  PMS Probe      CONC3        #/cm3        FSSP-300 Concentration
  PMS Probe      CONC6        #/cm3        260X Concentration
  PMS Probe      CONCA        #/cm3        PCAS Concentration
  PMS Probe      CONCF        #/cm3        FSSP-100 Concentration
  PMS Probe      CONCP        #/cm3        PCAS Concentration
  PMS Probe      CONCX        #/L          200X Concentration
  PMS Probe      CONCY        #/L          200Y Concentration
  PMS Probe      DBAR3        µm           FSSP-300 Mean Particle Diameter
  PMS Probe      DBAR6        µm           260X Mean Particle Diameter
  PMS Probe      DBARA        µm           PCAS Mean Particle Diameter
  PMS Probe      DBARF        µm           FSSP-100 Mean Particle Diameter
  PMS Probe      DBARP        µm           PCAS Mean Particle Diameter
  PMS Probe      DBARX        µm           200X Mean Particle Diameter
  PMS Probe      DBARY        µm           200Y Mean Particle Diameter
  PMS Probe      DISP3        none         FSSP-300 Dispersion (sigma/dbarx)
  PMS Probe      DISP6        none         260X Dispersion (sigma/dbarx)
  PMS Probe      DISPF        none         FSSP-100 Dispersion (sigma/dbarx)
  PMS Probe      DISPP        none         PCAS Dispersion (sigma/dbarx)
  PMS Probe      DISPX        none         200X Dispersion (sigma/dbarx)
  PMS Probe      DISPY        none         200Y Dispersion (sigma/dbarx)
  PMS Probe      PLWC3        gram/m3      FSSP-300 Water/Ice Content
  PMS Probe      PLWC6        gram/m3      260X Water/Ice Content
  PMS Probe      PLWCF        gram/m3      FSSP-100 Water/Ice Content
  PMS Probe      PLWCX        gram/m3      200X Water/Ice Content
  PMS Probe      PLWCY        gram/m3      200Y Water/Ice Content
  PMS Probe      DBZ6         dBZ          260X Computed Reflectivity
  PMS Probe      DBZX         dBZ          200X Computed Reflectivity
  PMS Probe      DBZY         dBZ          200Y Computed Reflectivity
  PMS Probe      FRNG         none         FSSP-100 Size Range Category
  PMS Probe      FRANGE       none         FSSP-100 Size Range Category (obsolete)
  PMS Probe      FRST         count        FSSP-100 Fast Resets
  PMS Probe      FRESET       count        FSSP-100 Fast Resets (obsolete)
  PMS Probe      FSTB         count        FSSP-100 Strobes
  PMS Probe      FSTROB       count        FSSP-100 Fast Strobes (obsolete)
  PMS Probe      FBMFR        none         FSSP-100 Beam Fraction
  PMS Probe      FACT         none         FSSP-100 Activity Fraction
  PMS Probe      AACT         count        PCAS Raw Activity (obsolete)
  PMS Probe      PACT         count        PCAS Raw Activity
  PMS Probe      SDWC1        count        2D-C Shadow OR Counts
  PMS Probe      SDWP1        count        2D-P Shadow OR Counts
  PMS Probe      CON2C1       #/L          2D-C Concentration (from Shadow OR Counts)
  PMS Probe      CON2P1       #/L          2D-P Concentration (from Shadow OR Counts)
  PMS Probe      CONC2C       #/L          2D-C Concentration (from Shadow OR Counts)
  PMS Probe      CONC2P       #/L          2D-P Concentration (from Shadow OR Counts)

  XII.  VARIABLES ASSOCIATED WITH PARTICLE MEASUREMENTS
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Uncorr. Raw    PCN          mbar         CN Counter Inlet Pressure
  Uncorr. Raw    TEMP1        deg_C        CN Counter Inlet Temperature
  Uncorr. Raw    TEMP2        deg_C        CVI CN Counter Sample Temperature
  Uncorr. Raw    CNTEMP       deg_C        CN Counter Inlet Temperature
  Uncorr. Raw    FCN          slpm         Raw CN Counter Sample Flow Rate
  Corrected Raw  FCNC         vlpm         Corrected CN Counter Sample Flow Rate
  Uncorr. Raw    XICN         slpm         CN Isokinetic Side Flow Rate
  Corrected Raw  XICNC        vlpm         Corrected CN Isokinetic Side Flow Rate
  Uncorr. Raw    count        count        TSI CN Counter Output
  Particle       CONCN        #/cm3        Condensation Nuclei (CN) Concentration

  XIII.  VARIABLES ASSOCIATED WITH AIR CHEMISTRY MEASUREMENTS
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Uncorr. Raw    CO           ppb          Carbon Monoxide Concentration
  Uncorr. Raw    CMODE        Vdc          Carbon Monoxide Analyzer Status
  Uncorr. Raw    COZRO        Vdc          CO Zero Baseline
  Uncorr. Raw    COCOR        Vdc          CO Baseline, Corrected
  Chemistry      COCAL        ppmv         Corrected CO Concentration
  Uncorr. Raw    TEO3         ppb          Raw TECO Ozone Output
  Chemistry      TEO3P        mbar         Internal TECO Ozone Sampling Pressure
  Uncorr. Raw    TEP          mbar         Internal TECO Ozone Sampling Pressure
  Uncorr. Raw    TET          deg_C        Internal TECO Ozone Sampling Temperature
  Chemistry      TEO3C        ppbv         Corrected TECO Ozone Concentration
  Uncorr. Raw    XNO          count        Nitric Oxide Raw Counts
  Uncorr. Raw    XNOY         count        Oxides of Nitrogen Raw Counts
  Uncorr. Raw    XNOCF        slpm         NO Calibration Flow
  Uncorr. Raw    XNCLF        slpm         NOy Calibration Flow
  Uncorr. Raw    XNST         none         NO, NOy Measurement Status
  Uncorr. Raw    XNOZA        slpm         NO Zero Air Flow
  Uncorr. Raw    XNZAF        slpm         NOy Zero Air Flow
  Uncorr. Raw    XNOSF        slpm         NO Sample Air Flow
  Uncorr. Raw    XNSAF        slpm         NOy Sample Air Flow
  Uncorr. Raw    XNOYP        mbar         NOy Reaction Chamber Pressure
  Uncorr. Raw    XNMBT        deg_C        Gold NOy Converter Temperature
  Chemistry      XNOCAL       ppbv         Corrected NO Concentration
  Chemistry      XNYCAL       ppbv         Corrected NOy Concentration
  Uncorr. Raw    O3FS         Vdc          Raw Chemiluminescent Ozone Signal
  Uncorr. Raw    O3FF         sccm         Chemiluminescent Ozone Sample Flow Rate
  Uncorr. Raw    O3FN         sccm         Chemiluminescent Ozone Nitric Oxide Flow
  Uncorr. Raw    O3FP         mbar         Chemiluminescent Ozone Sample Pressure
  Chemistry      O3FC         ppbv         Chemiluminescent Ozone Concentration

  XIV.  OBSOLETE VARIABLES
  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Time           TPTIME       s            Unaltered Tape Time
  Time           PTIME        s            Processor Time After Midnight
  Time           TMLAG        s            LTN-51 ARINC Time Lag
  LORAN-C Ref.   CLAT         degree_N     LORAN-C Latitude
  LORAN-C Ref.   CLON         degree_E     LORAN-C Longitude
  LORAN-C Ref.   CCEP         nmi          LORAN-C Circular Error of Probability
  LORAN-C Ref.   CGS          m/s          LORAN-C Ground Speed
  LORAN-C Ref.   CSTAT        none         LORAN-C Status
  LORAN-C Ref.   CSEC         s            LORAN-C Time
  LORAN-C Ref.   CFSEC        s            LORAN-C Fractional Time
  Inertial Ref.  ALAT         degree_N     INS Latitude
  Inertial Ref.  ALON         degree_E     INS Longitude
  Inertial Ref.  XVI          m/s          Raw INS Ground Speed X Component
  Inertial Ref.  YVI          m/s          Raw INS Ground Speed Y Component
  Inertial Ref.  THI          degree_T     Raw INS True Heading
  Inertial Ref.  ALPHA        degree       INS Wander Angle
  Inertial Ref.  PHDG         degree       INS Platform Heading
  Inertial Ref.  VZI          m/s          Raw Aircraft Vertical Velocity
  Inertial Ref.  THF          degree_T     Aircraft True Heading
  Wind           WSPD         m/s          Wind Speed
  Wind           WDRCTN       degree_T     Wind Direction
  Uncorr. Raw    AFIXL        gram         Raw Attack (Left Fixed Vane)
  Uncorr. Raw    AFIXR        gram         Raw Attack (Right Fixed Vane)
  Uncorr. Raw    BFIXT        gram         Raw Sideslip (Top Fixed Vane)
  Uncorr. Raw    BFIXB        gram         Raw Sideslip (Bottom Fixed Vane)
  State          AKFXL        degree       Attack Angle (Left Fixed Vane)
  State          AKFXR        degree       Attack Angle (Right Fixed Vane)
  State          SSFXT        degree       Sideslip Angle (Top Fixed Vane)
  State          SSFXB        degree       Sideslip Angle (Bottom Fixed Vane)
  Uncorr. Raw    TTKP         deg_C        Total Temperature (Fast Response)
  State          ATKP         deg_C        Ambient Temperature (Fast Response)
  State          ESUBW        mbar         Water Vapor Pressure
  State          ESUBI        mbar         Ice Vapor Pressure
  

Part 2 (Alphabetized)

  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  PMS Probe      A200X        count        200X Raw Accumulation
  PMS Probe      A200Y        count        200Y Raw Accumulation
  PMS Probe      A260X        count        260X Raw Accumulation
  PMS Probe      AACT         count        PCAS Raw Activity (obsolete)
  Inertial Ref.  ACINS        m/s2         Aircraft Vertical Acceleration
  Uncorr. Raw    ADIF         mbar         Vertical Differential Pressure, Boom
  Uncorr. Raw    ADIFR        mbar         Vertical Differential Pressure, Radome
  PMS Probe      AF300        count        FSSP-300 Raw Accumulation
  Uncorr. Raw    AFIXL        gram         Raw Attack (Left Fixed Vane) (obsolete)
  Uncorr. Raw    AFIXR        gram         Raw Attack (Right Fixed Vane) (obsolete)
  PMS Probe      AFSSP        count        FSSP-100 Raw Accumulation
  State          AKDF         degree       Attack Angle, Boom Diff. Pressure
  State          AKFXL        degree       Attack Angle (Left Fixed Vane) (obsolete)
  State          AKFXR        degree       Attack Angle (Right Fixed Vane) (obsolete)
  State          AKRD         degree       Attack Angle, Radome Diff. Pressure
  Inertial Ref.  ALAT         degree_N     INS Latitude
  Inertial Ref.  ALON         degree_E     INS Longitude
  Inertial Ref.  ALPHA        degree       INS Wander Angle
  Inertial Ref.  ALT          m            Inertial Altitude
  Reference      ALTX         m            Reference Altitude: MSL
  PMS Probe      APCAS        count        PCAS Particle Spacing
  Thermodynamic  ATB          deg_C        Ambient Temperature, Radome
  Thermodynamic  ATF          deg_C        Ambient Temperature, Fuselage
  Thermodynamic  ATFH         deg_C        Ambient Temperature, Deiced Fuselage
  State          ATKP         deg_C        Ambient Temperature (Fast Response) (obs.)
  Thermodynamic  ATRF         deg_C        Ambient Temperature, Reverse Flow
  Thermodynamic  ATRL         deg_C        Ambient Temperature, Radome Left
  Thermodynamic  ATRR         deg_C        Ambient Temperature, Radome Right
  State          ATTACK       degree       Attack Angle, Reference
  Thermodynamic  ATW          deg_C        Ambient Temperature, Wing
  Thermodynamic  ATWH         deg_C        Ambient Temperature, Deiced Wing
  Reference      ATX          deg_C        Ambient Temperature, Reference
  Uncorr. Raw    BDIF         mbar         Horizontal Differential Pressure, Boom
  Uncorr. Raw    BDIFR        mbar         Horizontal Differential Pressure, Radome
  Uncorr. Raw    BFIXB        gram         Raw Sideslip (Bot. Fixed Vane) (obsolete)
  Uncorr. Raw    BFIXT        gram         Raw Sideslip (Top Fixed Vane) (obsolete)
  Inertial Ref.  BLATA        g            Inertial, Lateral Body Acceleration
  Inertial Ref.  BLONA        g            Inertial, Longitudinal Body Acceleration
  Inertial Ref.  BNORMA       g            Inertial, Normal Body Acceleration
  Inertial Ref.  BPITCHR      deg/s        Inertial, Body Pitch Rate

  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Inertial Ref.  BROLLR       deg/s        Inertial, Body Roll Rate
  Inertial Ref.  BYAWR        deg/s        Inertial, Body Yaw Rate
  PMS Probe      C200X        #/L          200X Corrected Concentration
  PMS Probe      C200Y        #/L          200Y Corrected Concentration
  PMS Probe      C260X        #/L          260X Corrected Concentration
  LORAN-C Ref.   CCEP         nmi          LORAN-C Circ. Error of Probability (obs.)
  PMS Probe      CF300        #/cm3        FSSP-300 Corrected Concentration
  LORAN-C Ref.   CFSEC        second       LORAN-C Fractional Time (obsolete)
  PMS Probe      CFSSP        #/cm3        FSSP-100 Corrected Concentration
  LORAN-C Ref.   CGS          m/s          LORAN-C Ground Speed (obsolete)
  LORAN-C Ref.   CLAT         degree_N     LORAN-C Latitude (obsolete)
  LORAN-C Ref.   CLON         degree_E     LORAN-C Longitude (obsolete)
  Uncorr. Raw    CMODE        Vdc          Carbon Monoxide Analyzer Status
  Uncorr. Raw    count        count        TSI CN Counter Output
  Uncorr. Raw    CO           ppb          Carbon Monoxide Concentration
  Chemistry      COCAL        ppmv         Corrected CO Concentration
  Uncorr. Raw    COCOR        Vdc          CO Baseline, Corrected
  PMS Probe      CON2C1       #/L          2D-C Concentration (from Shadow OR Counts)
  PMS Probe      CON2P1       #/L          2D-P Concentration (from Shadow OR Counts)
  PMS Probe      CONC2C       #/L          2D-C Concentration (from Shadow OR Counts)
  PMS Probe      CONC2P       #/L          2D-P Concentration (from Shadow OR Counts)
  PMS Probe      CONC3        #/cm3        FSSP-300 Concentration
  PMS Probe      CONC6        #/cm3        260X Concentration
  PMS Probe      CONCA        #/cm3        PCAS Concentration
  PMS Probe      CONCF        #/cm3        FSSP-100 Concentration
  Particle       CONCN        #/cm3        Condensation Nuclei (CN) Concentration
  PMS Probe      CONCP        #/cm3        PCAS Concentration
  PMS Probe      CONCX        #/L          200X Concentration
  PMS Probe      CONCY        #/L          200Y Concentration
  Uncorr. Raw    COZRO        Vdc          CO Zero Baseline
  PMS Probe      CPCAS        #/cm3        PCAS Corrected Concentration
  Uncorr. Raw    CRHP         mbar         Cryogenic Hygrometer Inlet Pressure
  LORAN-C Ref.   CSEC         s            LORAN-C Time (obsolete)
  LORAN-C Ref.   CSTAT        none         LORAN-C Status (obsolete)
  PMS Probe      DBAR3        µm           FSSP-300 Mean Particle Diameter
  PMS Probe      DBAR6        µm           260X Mean Particle Diameter
  PMS Probe      DBARA        µm           PCAS Mean Particle Diameter
  PMS Probe      DBARF        µm           FSSP-100 Mean Particle Diameter
  PMS Probe      DBARP        µm           PCAS Mean Particle Diameter
  PMS Probe      DBARX        µm           200X Mean Particle Diameter

  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  PMS Probe      DBARY        µm           200Y Mean Particle Diameter
  PMS Probe      DBZ6         dBZ          260X Computed Reflectivity
  PMS Probe      DBZX         dBZ          200X Computed Reflectivity
  PMS Probe      DBZY         dBZ          200Y Computed Reflectivity
  Derived Posn.  DEI          km           Distance East of Reference
  PMS Probe      DISP3        none         FSSP-300 Dispersion (sigma/dbarx)
  PMS Probe      DISP6        none         260X Dispersion (sigma/dbarx)
  PMS Probe      DISPF        none         FSSP-100 Dispersion (sigma/dbarx)
  PMS Probe      DISPP        none         PCAS Dispersion (sigma/dbarx)
  PMS Probe      DISPX        none         200X Dispersion (sigma/dbarx)
  PMS Probe      DISPY        none         200Y Dispersion (sigma/dbarx)
  Derived Posn.  DNI          km           Distance North of Reference
  Uncorr. Raw    DPB          deg_C        Dew/Frost Point Temperature, Fuselage Bot.
  State          DPBC         deg_C        Dew Point Temperature, T-Electric Bottom
  State          DPCRC        deg_C        Dew Point Temperature, Cryogenic
  State          DPT          deg_C        Dew/Frost Point Temperature, Fuselage Top
  State          DPTC         deg_C        Dew Point Temperature, T-Electric Top
  Reference      DPX          deg_C        Dew/Frost Point Temperature, Reference
  Reference      DPXC         deg_C        Dew Point Temperature, Reference
  Uncorr. Raw    DTB          deg_C        Pyrgeometer Dome Temperature, Bottom
  Uncorr. Raw    DTT          deg_C        Pyrgeometer Dome Temperature, Top
  Thermodynamic  EDPC         mbar         Ambient Water Vapor Pressure, Reference
  State          ESUBI        mbar         Ice Vapor Pressure (obsolete)
  State          ESUBW        mbar         Water Vapor Pressure (obsolete)
  PMS Probe      FACT         none         FSSP-100 Activity Fraction
  PMS Probe      FBMFR        none         FSSP-100 Beam Fraction
  Uncorr. Raw    FCN          slpm         Raw CN Counter Sample Flow Rate
  Corrected Raw  FCNC         vlpm         Corrected CN Counter Sample Flow Rate
  State          FPCRC        deg_C        Frost Point Temperature, Cryogenic
  PMS Probe      FRANGE       none         FSSP-100 Size Range Category (obsolete)
  PMS Probe      FRESET       count        FSSP-100 Fast Resets (obsolete)
  PMS Probe      FRNG         none         FSSP-100 Size Range Category
  PMS Probe      FRST         count        FSSP-100 Fast Resets
  PMS Probe      FSTB         count        FSSP-100 Strobes
  PMS Probe      FSTROB       count        FSSP-100 Fast Strobes (obsolete)
  Derived Posn.  FXAZIM       degree       Radial Azimuth from Fixed Reference
  Derived Posn.  FXDIST       km           Radial Distance from Fixed Reference
  GPS Reference  GALT         m            GPS Altitude
  GPS Reference  GGSF         m/s          GPS Ground Speed
  GPS Reference  GLAT         degree_N     GPS Latitude

  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  GPS Reference  GLON         degree_E     GPS Longitude
  GPS Reference  GMODE        none         GPS Mode
  Inertial Ref.  GSF          m/s          Inertial Ground Speed
  GPS Reference  GSTAT        none         GPS Status
  GPS Reference  GVEW         m/s          GPS Ground Speed Vector, East Component
  GPS Reference  GVNS         m/s          GPS Ground Speed Vector, North Component
  GPS Reference  GVZI         m/s          GPS-Computed Aircraft Vertical Velocity
  Position       HGM          m            Geometric (Radio) Altitude
  Position       HGM232       m            Geometric (Radar) Altitude (APN-232)
  Position       HGME         m            Geometric (Radar) Altitude (APN-159)
  Position       HI3          m            Pressure-Damped Inertial Altitude
  Time           HOUR         hour         Raw Tape Time Component
  Uncorr. Raw    IRB          W/m2         Raw Infrared Irradiance, Bottom
  Radiation      IRBC         W/m2         Corrected Infrared Irradiance, Bottom
  Uncorr. Raw    IRT          W/m2         Raw Infrared Irradiance, Top
  Radiation      IRTC         W/m2         Corrected Infrared Irradiance, Top
  Inertial Ref.  LAT          degree_N     Inertial Latitude
  Reference      LATC         degree_N     GPS-Corrected Latitude
  Inertial Ref.  LON          deree_E      Inertial Longitude
  Reference      LONC         deree_E      GPS-Corrected Longitude
  Uncorr. Raw    LWC          gram/m3      Raw C-T Liquid Water Content
  Cloud Physics  LWCC         gram/m3      Corrected C-T Liquid Water Content
  Time           MINUTE       minute       Raw Tape Time Component
  Time           MONTH        month        Raw Tape Time Component @ start time
  Thermodynamic  MR           gram/kg      Mixing Ratio, T-Electric
  Thermodynamic  MRCR         gram/kg      Mixing Ratio, Cryogenic
  Thermodynamic  MRLA         gram/kg      Mixing Ratio, Lyman-alpha
  Thermodynamic  MRLA1        gram/kg      Mixing Ratio, Lyman-alpha
  Chemistry      O3FC         ppbv         Chemiluminescent Ozone Concentration
  Uncorr. Raw    O3FF         sccm         Chemiluminescent Ozone Sample Flow Rate
  Uncorr. Raw    O3FN         sccm         Chemiluminescent Ozone Nitric Oxide Flow
  Uncorr. Raw    O3FP         mbar         Chemiluminescent Ozone Sample Pressure
  Uncorr. Raw    O3FS         Vdc          Raw Chemiluminescent Ozone Signal
  PMS Probe      PACT         count        PCAS Raw Activity
  Position       PALT         m            NACA Pressure Altitude
  Position       PALTF        feet         NACA Pressure Altitude
  State          PCAB         mbar         Interior Cabin Static Pressure
  Uncorr. Raw    PCN          mbar         CN Counter Inlet Pressure
  Inertial Ref.  PHDG         degree       INS Platform Heading
  Inertial Ref.  PITCH        degree       Aircraft Pitch Angle

  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Uncorr. Raw    PLWC         W            Raw PMS-King Liquid Water Content Output
  Cloud Physics  PLWCC        gram/m3      Corrected PMS-King Liquid Water Content
  PMS Probe      PLWC3        gram/m3      FSSP-300 Water/Ice Content
  PMS Probe      PLWC6        gram/m3      260X Water/Ice Content
  Cloud Physics  PLWCC        gram/m3      Corrected PMS-King Liquid Water Content
  PMS Probe      PLWCF        gram/m3      FSSP-100 Water/Ice Content
  PMS Probe      PLWCX        gram/m3      200X Water/Ice Content
  PMS Probe      PLWCY        gram/m3      200Y Water/Ice Content
  Uncorr. Raw    PSB          mbar         Raw Static Pressure, Boom
  State          PSBC         mbar         Corrected Static Pressure, Boom
  Uncorr. Raw    PSF          mbar         Raw Static Pressure, Fuselage
  State          PSFC         mbar         Corrected Static Pressure, Fuselage
  Uncorr. Raw    PSFD         mbar         Raw Static Pressure, Fuselage Digital
  State          PSFDC        mbar         Corrected Static Pressure, Fuselage Dig.
  Thermodynamic  PSURF        mbar         Calculated Surface Pressure
  Uncorr. Raw    PSW          mbar         Raw Static Pressure, Wing
  State          PSWC         mbar         Corrected Static Pressure, Wing
  Reference      PSX          mbar         Raw Static Pressure, Reference
  Reference      PSXC         mbar         Corrected Static Pressure, Reference
  Time           PTIME        s            Processor Time After Midnight (obsolete)
  Uncorr. Raw    QCB          mbar         Raw Dynamic Pressure, Boom
  State          QCBC         mbar         Corrected Dynamic Pressure, Boom
  Uncorr. Raw    QCF          mbar         Raw Dynamic Pressure, Fuselage
  State          QCFC         mbar         Corrected Dynamic Pressure, Fuselage
  Uncorr. Raw    QCR          mbar         Raw Dynamic Pressure, Radome
  State          QCRC         mbar         Corrected Dynamic Pressure, Radome
  Uncorr. Raw    QCW          mbar         Raw Dynamic Pressure, Wing
  State          QCWC         mbar         Corrected Dynamic Pressure, Wing
  Reference      QCX          mbar         Raw Dynamic Pressure, Reference
  Reference      QCXC         mbar         Corrected Dynamic Pressure, Reference
  Thermodynamic  RHOCR        gram/m3      Absolute Humidity, Cryogenic
  Thermodynamic  RHODB        gram/m3      Absolute Humidity, T-Electric Bottom
  Thermodynamic  RHODT        gram/m3      Absolute Humidity, T-Electric Top
  Thermodynamic  RHOLA        gram/m3      Absolute Humidity, Lyman-alpha
  Thermodynamic  RHOLA1       gram/m3      Absolute Humidity, Lyman-alpha
  Thermodynamic  RHUM         %            Relative Humidity
  Uncorr. Raw    RICE         Vdc          Raw Icing-Rate Indicator
  Inertial Ref.  ROLL         degree       Aircraft Roll Angle
  Radiation      RSTB         deg_C        Radiometric Surface Temperature
  Radiation      RSTT         deg_C        Radiometric Sky/Cloud-Base Temperature

  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Cloud Physics  SCLWC        gram/m3      Derived Supercooled Liquid Water Content
  PMS Probe      SDWC1        count        2D-C Shadow OR Counts
  PMS Probe      SDWP1        count        2D-P Shadow OR Counts
  Time           SECOND       s            Raw Tape Time Component
  Thermodynamic  SPHUM        gram/kg      Specific Humidity
  State          SSDF         degree       Sideslip Angle, Boom Diff. Pressure
  State          SSFXB        degree       Sideslip Angle (Bot. Fixed Vane) (obs.)
  State          SSFXT        degree       Sideslip Angle (Top Fixed Vane) (obsolete)
  State          SSLIP        degree       Sideslip Angle, Reference
  State          SSRD         degree       Sideslip Angle, Radome Diff. Pressure
  Uncorr. Raw    STB          deg_C        Pyrgeometer Sink Temperature, Bottom
  Uncorr. Raw    STT          deg_C        Pyrgeometer Sink Temperature, Top
  Radiation      SWB          W/m2         Shortwave Irradiance, Bottom
  Radiation      SWT          W/m2         Shortwave Irradiance, Top
  Thermodynamic  TASB         m/s          Aircraft True Airspeed, Boom
  Thermodynamic  TASF         m/s          Aircraft True Airspeed, Fuselage
  Thermodynamic  TASHC        m/s          Aircraft True Airspeed, Humidity Corrected
  Thermodynamic  TASR         m/s          Aircraft True Airspeed, Radome
  Thermodynamic  TASW         m/s          Aircraft True Airspeed, Wing
  Reference      TASX         m/s          Aircraft True Airspeed, Reference
  Uncorr. Raw    TCAVB        deg_C        Cavity Temperature, Bottom PRT-5 (obs.)
  Uncorr. Raw    TCAVT        deg_C        Cavity Temperature, Top PRT-5 (obsolete)
  Uncorr. Raw    TEMP1        deg_C        CN Counter Inlet Temperature
  Uncorr. Raw    TEMP2        deg_C        CVI CN Counter Sample Temperature
  Uncorr. Raw    TEO3         ppb          Raw TECO Ozone Output
  Chemistry      TEO3C        ppbv         Corrected TECO Ozone Concentration
  Chemistry      TEO3P        mbar         Internal TECO Ozone Sampling Pressure
  Uncorr. Raw    TEP          mbar         Internal TECO Ozone Sampling Pressure
  Uncorr. Raw    TET          deg_C        Internal TECO Ozone Sampling Temperature
  Inertial Ref.  THDG         degree_T     Aircraft True Heading Angle
  Thermodynamic  THETA        K            Potential Temperature
  Thermodynamic  THETAE       K            Equivalent Potential Temperature
  Thermodynamic  THETAV       K            Virtual Potential Temperature
  Inertial Ref.  THF          degree_T     Aircraft True Heading (obsolete)
  Inertial Ref.  THI          degree_T     Raw INS True Heading (obsolete)
  Time           TMLAG        s            LTN-51 ARINC Time Lag (obsolete)
  Time           TPTIME       s            Unaltered Tape Time (obsolete)
  Uncorr. Raw    TTB          deg_C        Total Temperature, Radome
  Uncorr. Raw    TTF          deg_C        Total Temperature, Fuselage
  Uncorr. Raw    TTFH         deg_C        Total Temperature, Deiced Fuselage

  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Uncorr. Raw    TTKP         deg_C        Total Temperature (Fast Response) (obs.)
  Uncorr. Raw    TTRF         deg_C        Total Temperature, Reverse Flow
  Uncorr. Raw    TTRL         deg_C        Total Temperature, Radome Left
  Uncorr. Raw    TTRR         deg_C        Total Temperature, Radome Right
  Uncorr. Raw    TTW          deg_C        Total Temperature, Wing
  Uncorr. Raw    TTWH         deg_C        Total Temperature, Deiced Wing
  Reference      TTX          deg_C        Total Temperature, Reference
  Thermodynamic  TVIR         deg_C        Virtual Temperature
  Wind           UI           m/s          Wind Vector, East Component
  Reference      UIC          m/s          GPS-Corrected Wind Vector, East Component
  Radiation      UVB          W/m2         Ultraviolet Irradiance, Bottom
  Radiation      UVT          W/m2         Ultraviolet Irradiance, Top
  Wind           UX           m/s          Wind Vector, Longitudinal Component
  Reference      UXC          m/s          GPS-Corrected Wind Vector, Longitudinal Component
  Uncorr. Raw    VCRH         deg_C        Dew/Frost Point Temperature, Cryogenic
  Inertial Ref.  VEW          m/s          Inertial Ground Speed Vector, East Comp.
  Reference      VEWC         m/s          GPS-Corrected Ground Speed Vector, East Comp.
  Wind           VI           m/s          Wind Vector, North Component
  Reference      VIC          m/s          GPS-Corrected Wind Vector, North Component
  Uncorr. Raw    VLA          Vdc          Raw Lyman-alpha Hygrometer Output
  Uncorr. Raw    VLA1         Vdc          Raw Lyman-alpha Hygrometer Output
  Inertial Ref.  VNS          m/s          Inertial Ground Speed Vector, North Comp.
  Reference      VNSC         m/s          GPS-Corrected Ground Speed Vector, North Comp.
  Inertial Ref.  VSPD         m/s          IRS-Computed Aircraft Vertical Velocity
  Wind           VY           m/s          Wind Vector, Lateral Component
  Reference      VYC          m/s          GPS-Corrected Wind Vector, Lateral Component
  Inertial Ref.  VZI          m/s          Raw Aircraft Vertical Velocity (obsolete)
  Wind           WD           degree_T     Horizontal Wind Direction
  Reference      WDC          degree_T     GPS-Corrected Horizontal Wind Direction
  Wind           WDRCTN       degree_T     Wind Direction (obsolete)
  Wind           WI           m/s          Wind Vector, Vertical Gust Component
  Reference      WIC          m/s          GPS-Corrected Wind Vector, Vertical Gust Component
  Inertial Ref.  WP3          m/s          Damped Aircraft Vertical Velocity
  Wind           WS           m/s          Horizontal Wind Speed
  Reference      WSC          m/s          GPS-Corrected Horizontal Wind Speed
  Wind           WSPD         m/s          Wind Speed (obsolete)
  Uncorr. Raw    XICN         slpm         CN Isokinetic Side Flow Rate
  Corrected Raw  XICNC        vlpm         Corrected CN Isokinetic Side Flow Rate
  Uncorr. Raw    XNCLF        slpm         NOy Calibration Flow
  Uncorr. Raw    XNMBT        deg_C        Gold NOy Converter Temperature

  Type           Name         Units        Description
  -------------------------------------------------------------------------------------------
  Uncorr. Raw    XNO          count        Nitric Oxide Raw Counts
  Chemistry      XNOCAL       ppbv         Corrected NO Concentration
  Uncorr. Raw    XNOCF        slpm         NO Calibration Flow
  Uncorr. Raw    XNOSF        slpm         NO Sample Air Flow
  Uncorr. Raw    XNOY         count        Oxides of Nitrogen Raw Counts
  Uncorr. Raw    XNOYP        mbar         NOy Reaction Chamber Pressure
  Uncorr. Raw    XNOZA        slpm         NO Zero Air Flow
  Uncorr. Raw    XNSAF        slpm         NOy Sample Air Flow
  Uncorr. Raw    XNST         none         NO, NOy Measurement Status
  Chemistry      XNYCAL       ppbv         Corrected NOy Concentration
  Uncorr. Raw    XNZAF        slpm         NOy Zero Air Flow
  Inertial Ref.  XVI          m/s          Raw INS Ground Speed X Component (obs.)
  Time           YEAR         year         Raw Tape Time Component @ start time
  Inertial Ref.  YVI          m/s          Raw INS Ground Speed Y Component (obs.)
  Time           base_time    s            Reference Start Time (Seconds since Jan 1, 1970)
  Time           time_offset  s            Time offset from reference time (Seconds since base_time)

  

Part 3 (Description of Types)

            Time          -  Measurements related to time and date
            Inertial Ref. -  Reference data from either the Honeywell YG1854
                              Laseref SM Inertial Reference System or the
                              (now obsolete) Litton LTN-51 Inertial
                              Navigation System
            GPS Ref.      -  Reference data from the Global Positioning
                              System (Trimble TANS GPS Receiver)
            Derived Posn. -  Position measurements calculated using other
                              basic position measurements
            Uncorr. Raw   -  Uncorrected raw data
            Corrected Raw -  Corrected raw data (usually a component of
                              another derived measurement)
            State         -  Measurements that describe the state of the
                              aircraft or the ambient air
            Reference     -  Reference measurement used for other derived
                              calculations
            Thermodynamic -  Derived thermodynamic measurements
            Wind          -  Three-dimensional wind measurements
            Radiation     -  Measurements of solar or terrestrial radiation
            Cloud Physics -  Measurements of cloud liquid water
            PMS Probe     -  Any measurements associated with PMS 1D and 2D
                              probes
            Particle      -  Aerosol measurements
            Chemistry     -  Atmospheric chemical constituents
            Position      -  Measurements of an aircraft's three-dimensional
                              position in space