condition	mean	min	max
4 h after light	7.826083333333333	7.698639999999999	8.06869
8 h after light	7.6348	7.536560000000001	7.793089999999999
12 h after light	7.623456666666667	7.51345	7.8239600000000005
4 h after dark	7.824236666666667	7.65698	7.933330000000001
8 h after dark	7.98322	7.861210000000001	8.216389999999999
12 h after dark	7.94028	7.733339999999999	8.15217