def td(t, rh):
    '\n    Calculate the dew point (in °C).\n\n        T_d = \\frac{T_n}{\\frac{m}{log_{10}\\left(\\frac{P_w}{A}\\right)} - 1}\n\n    '
    (A, m, Tn) = pws_constants(t)
    Pw = pw(t, rh)
    return (Tn / ((m / math.log((Pw / A), 10)) - 1))
Calculate the dew point (in °C).

    T_d = \frac{T_n}{\frac{m}{log_{10}\left(\frac{P_w}{A}\right)} - 1}
def td(t, rh):
    '\n    Calculate the dew point (in °C).\n\n        T_d = \\frac{T_n}{\\frac{m}{log_{10}\\left(\\frac{P_w}{A}\\right)} - 1}\n\n    '
    (A, m, Tn) = pws_constants(t)
    Pw = pw(t, rh)
    return (Tn / ((m / math.log((Pw / A), 10)) - 1))