condition mean min max 4 h after light 1145.7 1145.7 1145.7 8 h after light 1454.25 1212.1 1696.4 12 h after light 3305.5 2063.4 4547.6 4 h after dark 3759.3500000000004 1933.9 5584.8 8 h after dark 2147.15 1535.2 2759.1 12 h after dark 1470.75 1059.7 1881.8