condition mean min max 4 h after light 485.4 485.4 485.4 8 h after light 668.5 558.1 778.9 12 h after light 733.3 695.4 771.2 4 h after dark 597.85 369.1 826.6 8 h after dark 478.25 444.9 511.6 12 h after dark 460.65 370.4 550.9