condition mean min max 0 h after light 5.769235 4.20057 7.3379 4 h after light 4.663525 3.9865 5.34055 8 h after light 4.44344 3.70394 5.18294 4 h after dark 14.40005 11.4921 17.308 8 h after dark 13.1569 12.7322 13.5816 12 h after dark 5.027755 4.93521 5.1203