Transmittance due to gas

Calculates transmittance due to O2 and CO2.

trans_gas(...)

# S3 method for numeric
trans_gas(air_mass_abs, ...)

# S3 method for weather_station
trans_gas(weather_station, ...)

Arguments

...	Additional parameters passed to later functions.
air_mass_abs	Absolute optical air mass.
weather_station	Object of class weather_station.

Value

Transmittance due to gas (0-1)