NCAR Humitters using Vaisala 50Ys:
This lists probes used by ISFF, ISS, and perhaps others.
P1110023
P1110024
P1110027
P4920040
R4910001
R4910005
R4910007
T0820012
T11300007
T11400031
T2620019
T3450022
T3510004
T3510005
T3510006
T3510007
T3510008
T3510009
T3510010
T3910003
T3910004
T3910005
U3910001
U3910002
U4910022
U4910023
U4910024
U5020026
U5020027
U5020028
U5020029
U5020030
W2020101
W2020102
W2020103
W2020104
W2020105