condition	mean	min	max
0 h after light	17.9682	17.624	18.3124
4 h after light	9.553645	9.37021	9.73708
8 h after light	9.1222	8.75063	9.49377
4 h after dark	5.781815	4.73087	6.83276
8 h after dark	9.394375	8.74205	10.0467
12 h after dark	15.3513	14.4912	16.2114