condition	mean	min	max
4 h after light	7.721383333333333	7.63395	7.8954699999999995
8 h after light	7.540946666666667	7.47357	7.582560000000001
12 h after light	7.6264400000000006	7.4728	7.75785
4 h after dark	7.70394	7.551089999999999	7.83621
8 h after dark	7.745753333333333	7.60343	7.91569
12 h after dark	7.833046666666666	7.78207	7.9134