condition	mean	min	max
4 h after light	9.049186666666667	8.79676	9.19968
8 h after light	9.00476	8.9544	9.06579
12 h after light	9.103363333333334	8.98915	9.16469
4 h after dark	9.24084	9.19326	9.288910000000001
8 h after dark	9.1673	9.036719999999999	9.3475
12 h after dark	9.303306666666666	9.09328	9.553289999999999