condition	mean	min	max
0 h after light	15.8117	15.45	16.1734
4 h after light	8.53012	8.42705	8.63319
8 h after light	6.0176549999999995	5.21228	6.82303
4 h after dark	13.82385	13.327	14.3207
8 h after dark	17.9672	17.8997	18.0347
12 h after dark	14.2059	14.0515	14.3603