condition	mean	min	max
4 h after light	11.93365	10.579	13.2883
8 h after light	8.653915	8.1969	9.11093
12 h after light	10.781755	8.78831	12.7752
4 h after dark	23.046999999999997	19.0399	27.0541
8 h after dark	17.247	16.6158	17.8782
12 h after dark	16.979950000000002	15.7649	18.195