condition mean min max 4 h after light 9.48597 9.3678 9.60414 8 h after light 11.32475 10.8406 11.8089 12 h after light 14.551649999999999 14.1703 14.933 4 h after dark 15.9833 15.3954 16.5712 8 h after dark 13.8905 13.726 14.055 12 h after dark 13.31995 12.8732 13.7667