condition	mean	min	max
0 h after light	3.309135	0.0	6.61827
4 h after light	3.365755	0.0	6.73151
8 h after light	17.5708	14.0059	21.1357
4 h after dark	18.59145	10.1961	26.9868
8 h after dark	8.865585	8.43608	9.29509
12 h after dark	3.7392700000000003	2.76596	4.71258