condition	mean	min	max
0 h after light	18.3233	17.733	18.9136
4 h after light	9.635480000000001	9.52874	9.74222
8 h after light	7.395435	7.1573	7.63357
4 h after dark	11.54925	10.311	12.7875
8 h after dark	12.1344	10.6874	13.5814
12 h after dark	16.62675	14.1346	19.1189