condition	mean	min	max
4 h after light	6.215945	4.19632	8.23557
8 h after light	5.543760000000001	5.04943	6.03809
12 h after light	7.5780899999999995	7.26818	7.888
4 h after dark	9.788415	9.37393	10.2029
8 h after dark	9.074015	8.5859	9.56213
12 h after dark	6.69763	6.55704	6.83822