'Return the state attributes.'

@property
def device_state_attributes(self):

    if self._is_metric:
        return {ATTR_DEWPOINT: self._dewpoint, ATTR_CRITICAL_TEMP: self._crit_temp}
    return {ATTR_DEWPOINT: util.temperature.celsius_to_fahrenheit(self._dewpoint), ATTR_CRITICAL_TEMP: util.temperature.celsius_to_fahrenheit(self._crit_temp)}
