Function vapour_pressure_pa 

pub fn vapour_pressure_pa(
    temperature_k: f64,
    relative_humidity: f64,
) -> Result<f64, AtmosError>

The vapour pressure, Pa, of air at temperature_k with relative humidity relative_humidity (a fraction, relative to liquid water): e = U e_w(T).

Errors

AtmosError::Domain if the temperature is not finite and positive, or the relative humidity is outside [0, 1].