condition	mean	min	max
4 h after light	4.609586666666667	4.5145599999999995	4.67459
8 h after light	4.4784	4.3997	4.6132800000000005
12 h after light	4.383673333333333	4.28894	4.53527
4 h after dark	4.5175399999999994	4.48654	4.53836
8 h after dark	4.49071	4.2866	4.63438
12 h after dark	4.442586666666666	4.3800099999999995	4.5554