condition mean min max 4 h after light 543.7 543.7 543.7 8 h after light 443.85 417.9 469.8 12 h after light 571.25 393.3 749.2 4 h after dark 637.95 467.0 808.9 8 h after dark 521.3 388.1 654.5 12 h after dark 652.6500000000001 595.7 709.6