condition mean min max 4 h after light 11.800295 9.64869 13.9519 8 h after light 10.300645 9.59109 11.0102 12 h after light 11.64505 10.2495 13.0406 4 h after dark 12.24925 11.701 12.7975 8 h after dark 12.67875 12.6436 12.7139 12 h after dark 12.84045 12.1509 13.53