def dew_point(self, db):
if self._hum_type == '<STR_LIT>':<EOL><INDENT>return self._hum_value<EOL><DEDENT>elif self._hum_type == '<STR_LIT>':<EOL><INDENT>return dew_point_from_db_wb(<EOL>db, self._hum_value, self._barometric_pressure)<EOL><DEDENT>elif self._hum_type == '<STR_LIT>':<EOL><INDENT>return dew_point_from_db_hr(<EOL>db, self._hum_value, self._barometric_pressure)<EOL><DEDENT>elif self._hum_type == '<STR_LIT>':<EOL><INDENT>return dew_point_from_db_enth(<EOL>db, self._hum_value / <NUM_LIT:1000>,  self._barometric_pressure)<EOL><DEDENT>
Get the dew point (C), which is constant throughout the day (except at saturation).

        args:
            db: The maximum dry bulb temperature over the day.