@property<EOL><INDENT>def extraterrestrial_direct_normal_radiation(self):<DEDENT>
return self._get_data_by_field(<NUM_LIT:11>)<EOL>
Return annual Extraterrestrial Direct Normal Radiation as a Ladybug Data Collection.

        This is the Extraterrestrial Direct Normal Radiation in Wh/m2. (Amount of solar
        radiation in Wh/m2 received on a surface normal to the rays of the sun at the top
        of the atmosphere during the number of minutes preceding the time indicated).
        It is not currently used in EnergyPlus calculations. It should have a minimum
        value of 0; missing value for this field is 9999.
        Read more at: https://energyplus.net/sites/all/modules/custom/nrel_custom/pdfs
            /pdfs_v8.4.0/AuxiliaryPrograms.pdf (Chapter 2.9.1)