condition	mean	min	max
4 h after light	4.1359200000000005	4.06974	4.21382
8 h after light	4.119576666666666	4.03899	4.26973
12 h after light	4.120106666666667	4.09968	4.14529
4 h after dark	4.116053333333333	4.06569	4.18559
8 h after dark	4.2035	4.057840000000001	4.35025
12 h after dark	4.01725	3.9706099999999998	4.05756