condition mean min max 4 h after light 412.2 412.2 412.2 8 h after light 429.2 361.2 497.2 12 h after light 576.2 570.9 581.5 4 h after dark 645.9000000000001 610.7 681.1 8 h after dark 540.05 497.9 582.2 12 h after dark 419.0 346.1 491.9