condition	mean	min	max
4 h after light	7.2432549999999996	7.16744	7.31907
8 h after light	7.17986	7.09263	7.26709
12 h after light	6.13892	5.65091	6.62693
4 h after dark	7.491445	6.21176	8.77113
8 h after dark	6.523785	6.28852	6.75905
12 h after dark	6.753534999999999	6.73592	6.77115