condition	mean	min	max
0 h after light	8.821065	8.07972	9.56241
4 h after light	12.25485	10.9309	13.5788
8 h after light	7.55453	5.87423	9.23483
4 h after dark	18.323349999999998	14.7105	21.9362
8 h after dark	18.13125	17.3596	18.9029
12 h after dark	9.82894	8.71778	10.9401