def getWindChill(temp, windSpeed):
    """
    A utility function to get the human-apparent temperature in an
    oxygen-nitrogen atmosphere given an actual temperature and a wind speed.
    Wind chill is only valid for temperatures at or lower than 10C (50F) and
    wind speeds higher than 4.8 km/h (3 m/h).

    @param temp: temperature in degrees Celcius
    @param windSpeed: wind speed in km/h
    """
    if temp > 10:
        return temp
    if windSpeed < 4.8:
        return temp
    return (13.12 + (0.6125 * temp) - (11.37 * windSpeed ** 0.16) +
            0.3965 * temp* windSpeed ** 0.16)