condition	mean	min	max
4 h after light	6.290165	6.10903	6.4713
8 h after light	8.009575	7.89972	8.11943
12 h after light	9.79449	9.73852	9.85046
4 h after dark	11.6603	10.9219	12.3987
8 h after dark	8.4266	8.18573	8.66747
12 h after dark	8.02463	7.3634	8.68586