<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def apparent_temperature(temperature, rh, speed, face_level_winds=False):
 r"""Calculate the current apparent temperature. Calculates the current apparent temperature based on the wind chill or heat index as appropriate for the current conditions. Follows [NWS10201]_. Parameters temperature : `pint.Quantity` The air temperature rh : `pint.Quantity` The relative humidity expressed as a unitless ratio in the range [0, 1]. Can also pass a percentage if proper units are attached. speed : `pint.Quantity` The wind speed at 10m. If instead the winds are at face level, `face_level_winds` should be set to `True` and the 1.5 multiplicative correction will be applied automatically. face_level_winds : bool, optional A flag indicating whether the wind speeds were measured at facial level instead of 10m, thus requiring a correction. Defaults to `False`. Returns ------- `pint.Quantity` The corresponding apparent temperature value(s) See Also -------- heat_index, windchill """

    is_not_scalar = isinstance(temperature.m, (list, tuple, np.ndarray))

    temperature = atleast_1d(temperature)
    rh = atleast_1d(rh)
    speed = atleast_1d(speed)

    wind_chill_temperature = windchill(temperature, speed, face_level_winds=face_level_winds,
                                       mask_undefined=True).to(temperature.units)

    heat_index_temperature = heat_index(temperature, rh,
                                        mask_undefined=True).to(temperature.units)

    # Combine the heat index and wind chill arrays (no point has a value in both)
    app_temperature = np.ma.where(masked_array(wind_chill_temperature).mask,
                                  heat_index_temperature,
                                  wind_chill_temperature)

    if is_not_scalar:
        # Fill in missing areas where neither wind chill or heat index are applicable with the
        # ambient temperature.
        app_temperature[app_temperature.mask] = temperature[app_temperature.mask]
        return np.array(app_temperature) * temperature.units
    else:
        if app_temperature.mask:
            app_temperature = temperature.m
        return atleast_1d(app_temperature)[0] * temperature.units