condition mean min max 4 h after light 3541.1 3541.1 3541.1 8 h after light 3439.4 3128.5 3750.3 12 h after light 3025.2 2612.2 3438.2 4 h after dark 2125.9 1973.7 2278.1 8 h after dark 1851.4 1773.3 1929.5 12 h after dark 1893.8000000000002 1726.2 2061.4