def get_wind_direction_string(wind_direction_in_deg):
    """Get the string interpretation of wind direction in degrees"""

    if wind_direction_in_deg is not None:
        if wind_direction_in_deg <=23:
            return "N"
        elif wind_direction_in_deg > 338:
            return "N"
        elif (23 < wind_direction_in_deg <= 68):
            return "NE"
        elif (68 < wind_direction_in_deg <= 113):
            return "E"
        elif (113 < wind_direction_in_deg <= 158):
            return "SE"
        elif (158 < wind_direction_in_deg <= 203):
            return "S"
        elif (203 < wind_direction_in_deg <= 248):
            return "SW"
        elif (248 < wind_direction_in_deg <= 293):
            return "W"
        elif (293 < wind_direction_in_deg <= 338):
            return "NW"
        else:
            return "Unavailable"

    return "Unavailable"