condition mean min max 4 h after light 558.8 558.8 558.8 8 h after light 504.45000000000005 482.7 526.2 12 h after light 501.6 470.2 533.0 4 h after dark 547.0999999999999 539.3 554.9 8 h after dark 573.55 556.1 591.0 12 h after dark 590.9 550.4 631.4