condition	mean	min	max
4 h after light	7.34032	7.23822	7.4239
8 h after light	7.573853333333334	7.459230000000001	7.662260000000001
12 h after light	7.942046666666666	7.9031199999999995	8.00137
4 h after dark	7.95386	7.77792	8.24392
8 h after dark	7.7716899999999995	7.57552	7.9451600000000004
12 h after dark	7.6548	7.60013	7.7156199999999995