condition mean min max 0 h after light 13.56615 12.2546 14.8777 4 h after light 15.90005 15.6646 16.1355 8 h after light 39.837 38.5346 41.1394 4 h after dark 45.5366 39.4448 51.6284 8 h after dark 28.93565 28.4031 29.4682 12 h after dark 16.743299999999998 15.9875 17.4991