condition	mean	min	max
4 h after light	7.625626666666666	7.388780000000001	7.80231
8 h after light	8.08581	7.7893	8.29465
12 h after light	7.795633333333333	7.633489999999999	8.0593
4 h after dark	7.5885299999999996	7.39805	7.813219999999999
8 h after dark	7.553156666666666	7.37742	7.76927
12 h after dark	7.523686666666666	7.306019999999999	7.7878300000000005