condition	mean	min	max
4 h after light	9.34783	9.073830000000001	9.53254
8 h after light	9.19276	8.757819999999999	9.44088
12 h after light	9.44743	9.19303	9.62583
4 h after dark	9.56479	9.25187	9.84323
8 h after dark	9.47501	9.16775	9.7423
12 h after dark	9.616173333333332	9.34489	9.79407