Shading#

`shading.ground_angle`(surface_tilt, gcr, ...)	Angle from horizontal of the line from a point on the row slant length to the bottom of the facing row.
`shading.masking_angle`(surface_tilt, gcr, ...)	The elevation angle below which diffuse irradiance is blocked.
`shading.masking_angle_passias`(surface_tilt, gcr)	The average masking angle over the slant height of a row.
`shading.sky_diffuse_passias`(masking_angle)	The diffuse irradiance loss caused by row-to-row sky diffuse shading.
`shading.projected_solar_zenith_angle`(...)	Calculate projected solar zenith angle in degrees.

pvlib.soiling.kimber

pvlib.shading.ground_angle