condition mean min max 4 h after light 205.6 205.6 205.6 8 h after light 313.4 234.8 392.0 12 h after light 441.15 436.2 446.1 4 h after dark 594.05 414.3 773.8 8 h after dark 746.8 610.4 883.2 12 h after dark 509.45 463.4 555.5