condition mean min max 4 h after light 513.7 513.7 513.7 8 h after light 466.95000000000005 439.6 494.3 12 h after light 413.8 405.6 422.0 4 h after dark 379.65 350.8 408.5 8 h after dark 349.9 328.6 371.2 12 h after dark 319.75 274.3 365.2