condition mean min max 4 h after light 656.9 656.9 656.9 8 h after light 529.25 411.2 647.3 12 h after light 452.45 418.4 486.5 4 h after dark 728.1500000000001 345.9 1110.4 8 h after dark 1303.5 1296.0 1311.0 12 h after dark 1470.85 1274.5 1667.2