condition	mean	min	max
4 h after light	4.00408	3.9498	4.0774
8 h after light	4.031126666666667	3.9790900000000002	4.07619
12 h after light	4.024073333333334	3.89428	4.22234
4 h after dark	3.9030400000000003	3.89718	3.9138300000000004
8 h after dark	3.9339833333333334	3.9031	3.94979
12 h after dark	3.923046666666667	3.83406	3.98165