condition mean min max 4 h after light 538.0 538.0 538.0 8 h after light 490.95 442.9 539.0 12 h after light 449.70000000000005 397.6 501.8 4 h after dark 456.0 383.7 528.3 8 h after dark 465.7 462.2 469.2 12 h after dark 422.5 403.8 441.2