condition	mean	min	max
4 h after light	8.365979999999999	8.145489999999999	8.509089999999999
8 h after light	8.404116666666667	8.16817	8.58987
12 h after light	8.755989999999999	8.52259	8.991589999999999
4 h after dark	8.36261	8.08822	8.51562
8 h after dark	8.353526666666667	8.14418	8.47478
12 h after dark	8.502003333333333	8.46113	8.52534