condition mean min max 0 h after light 131.1635 125.078 137.249 4 h after light 64.05645 52.0662 76.0467 8 h after light 71.9006 64.379 79.4222 4 h after dark 159.9035 157.363 162.444 8 h after dark 123.6255 116.947 130.304 12 h after dark 139.1815 127.561 150.802