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

        The present weather codes field is assumed to follow the TMY2 conventions for
        this field. Note that though this field may be represented as numeric (e.g. in
        the CSV format), it is really a text field of 9 single digits. This convention
        along with values for each "column" (left to right) is presented in Table 16.
        Note that some formats (e.g. TMY) does not follow this convention - as much as
        possible, the present weather codes are converted to this convention during
        WeatherConverter processing. Also note that the most important fields are those
        representing liquid precipitation - where the surfaces of the building would be
        wet. EnergyPlus uses "Snow Depth" to determine if snow is on the ground.

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