condition mean min max 0 h after light 7.502314999999999 7.1407 7.86393 4 h after light 8.568465 8.44133 8.6956 8 h after light 10.635380000000001 9.54476 11.726 4 h after dark 12.54745 12.5139 12.581 8 h after dark 10.8601 10.0513 11.6689 12 h after dark 8.19295 7.54139 8.84451