@property<EOL><INDENT>def present_weather_observation(self):<DEDENT>
return self._get_data_by_field(<NUM_LIT>)<EOL>
Return annual Present Weather Observation as a Ladybug Data Collection.

        If the value of the field is 0, then the observed weather codes are taken from
        the following field. If the value of the field is 9, then "missing" weather is
        assumed. Since the primary use of these fields (Present Weather Observation and
        Present Weather Codes) is for rain/wet surfaces, a missing observation field or
        a missing weather code implies no rain.

        Read more at: https://energyplus.net/sites/all/modules/custom/nrel_custom/pdfs
            /pdfs_v8.4.0/AuxiliaryPrograms.pdf (Chapter 2.9.1)