condition mean min max 4 h after light 375.5 375.5 375.5 8 h after light 397.65 383.6 411.7 12 h after light 439.9 433.5 446.3 4 h after dark 423.6 411.3 435.9 8 h after dark 399.7 391.9 407.5 12 h after dark 400.8 392.5 409.1