condition	mean	min	max
4 h after light	8.487374500000001	8.290039	8.68471
8 h after light	8.723060499999999	8.188564	9.257557
12 h after light	8.712169500000002	8.42392	9.000419
4 h after dark	9.873524499999998	9.097223	10.649826
8 h after dark	8.519239	8.005252	9.033226
12 h after dark	8.446746	8.446746	8.446746