condition	mean	min	max
4 h after light	7.21167	6.6588899999999995	7.51695
8 h after light	7.50274	7.374789999999999	7.666460000000001
12 h after light	7.293313333333333	7.02463	7.47542
4 h after dark	7.097036666666667	6.94738	7.3366
8 h after dark	7.060293333333333	6.866969999999999	7.40425
12 h after dark	7.15944	7.04258	7.26284