condition mean min max 4 h after light 478.6 478.6 478.6 8 h after light 535.9 489.8 582.0 12 h after light 468.95 304.4 633.5 4 h after dark 433.85 426.5 441.2 8 h after dark 373.4 283.2 463.6 12 h after dark 327.35 223.3 431.4