condition	mean	min	max
4 h after light	7.402846666666667	7.233569999999999	7.663760000000001
8 h after light	7.52148	7.34563	7.81168
12 h after light	7.08966	6.92457	7.41984
4 h after dark	7.20758	7.030869999999999	7.51797
8 h after dark	7.201076666666666	7.112239999999999	7.3708800000000005
12 h after dark	7.39627	7.28293	7.59696