Accessing angle data for Sentinel-2 L2A

Grid of solar zenith angles and grid of solar azimuth angles are accessible by names 'sunZenithAngles' and 'sunAzimuthAngles', respectively. You can use them like band values, for example:

return [sunAzimuthAngles/50];

return [sunZenithAngles/60];

There are also two grids named 'viewZenithMean' and 'viewAzimuthMean' that contains average viewing incidence angles (zenith and azimuth) across all bands and detectors. They can be used as, e.g.:

return [viewAzimuthMean/70];

return [viewZenithMean/80];
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