condition mean min max 4 h after light 3013.1 3013.1 3013.1 8 h after light 3682.45 3662.3 3702.6 12 h after light 3913.3 3659.5 4167.1 4 h after dark 5239.5 4609.6 5869.4 8 h after dark 5335.75 4357.2 6314.3 12 h after dark 4830.9 4290.5 5371.3