condition mean min max 4 h after light 258.2 258.2 258.2 8 h after light 338.6 336.2 341.0 12 h after light 520.55 394.9 646.2 4 h after dark 575.6500000000001 357.1 794.2 8 h after dark 357.55 237.6 477.5 12 h after dark 195.95 135.1 256.8