condition	mean	min	max
0 h after light	12.45435	11.68	13.2287
4 h after light	6.04269	4.56919	7.51619
8 h after light	18.81745	16.637	20.9979
4 h after dark	29.915699999999998	20.4794	39.352
8 h after dark	18.28875	16.9241	19.6534
12 h after dark	7.973135000000001	7.88534	8.06093