condition mean min max 4 h after light 624.6 624.6 624.6 8 h after light 1338.0 630.0 2046.0 12 h after light 894.25 253.8 1534.7 4 h after dark 1039.75 145.0 1934.5 8 h after dark 1741.8500000000001 1056.4 2427.3 12 h after dark 1515.2 1333.7 1696.7