condition mean min max 4 h after light 533.1 533.1 533.1 8 h after light 511.2 437.5 584.9 12 h after light 452.25 342.0 562.5 4 h after dark 332.54999999999995 300.7 364.4 8 h after dark 520.5999999999999 401.4 639.8 12 h after dark 641.95 518.5 765.4