condition	mean	min	max
0 h after light	8.26902	7.9624	8.57564
4 h after light	8.61894	8.17723	9.06065
8 h after light	14.6752	14.0	15.3504
4 h after dark	14.3845	13.747	15.022
8 h after dark	11.487	11.1275	11.8465
12 h after dark	8.261025	7.60598	8.91607