condition	mean	min	max
4 h after light	6.483594999999999	6.35518	6.61201
8 h after light	6.7277000000000005	6.64808	6.80732
12 h after light	7.546745	7.07461	8.01888
4 h after dark	9.85477	9.78972	9.95406
8 h after dark	9.56102	8.9607	9.86655
12 h after dark	7.848253333333333	7.46707	8.32541