AH                      calculate absolute humidity
C2K                     Celsius to Kelvin conversion
Es.T0                   Saturation vapor pressure at absolute zero
                        (hPa)
K2C                     Kelvin to Celsius conversion
L                       Latent heat of water vapor
MR                      calculate mixing ratio
Md                      Molecular weight of dry air
Mw                      Molecular weight of water vapor
Rw                      Specific gas constant of water vapor
SH                      calculate specific humidity
SVP                     calculate saturation vapor pressure
SVP.ClaCla              calculate saturation vapor pressure using the
                        Clausius-Clapeyron equation
SVP.Murray              calculate saturation vapor pressure using the
                        Murray equation
T0                      Absolute zero
WVP                     calculate partial water vapor pressure
ivs                     Viability of influenza A virus for 1 hour after
                        spraying
