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T EW
α ⋅= eEW λβ +⋅ TT α ;:β β ; <β: λ ; Dp
⋅= − lnln EEDp αβαλ RH E =RH *EW/100 Dp T RH
⋅= +⋅+ − 100ln100ln),( λββλβλ +⋅+ TTRHTTRHRHTDp Dp RH T
H = (log10(RH)-2)/0.4343 + (17.62*T)/(243.12+T); Dp = 243.12*H/(17.62-H); // this is the dew point in Celsius