Measurement relating dissipated heat to analog output voltage.
Measurements from VOCALS flight RF02: CONCD is the concentration measured by a Cloud Droplet Probe, TASX is the true airspeed, PLWC1 is the power measured by the King Probe, PDRY is the estimate of the power required in dry air, PLWCC1 is the standard LWC in the processed file, and PLWCX is the liquid water content produced by the new processing used beginning in 2012, as described in the wiki note referenced above.