condition mean min max 4 h after light 842.1 842.1 842.1 8 h after light 694.55 620.9 768.2 12 h after light 714.5 686.1 742.9 4 h after dark 737.6500000000001 660.2 815.1 8 h after dark 773.3499999999999 672.4 874.3 12 h after dark 912.3 796.3 1028.3