condition	mean	min	max
0 h after light	8.29846	7.48763	9.10929
4 h after light	6.89559	6.30679	7.48439
8 h after light	15.99185	15.6923	16.2914
4 h after dark	13.2132	11.6303	14.7961
8 h after dark	11.9535	11.7149	12.1921
12 h after dark	8.05987	6.76448	9.35526