condition	mean	min	max
0 h after light	9.400565	9.20786	9.59327
4 h after light	7.366585	6.90891	7.82426
8 h after light	5.802125	5.36668	6.23757
4 h after dark	7.812385	6.26477	9.36
8 h after dark	9.512935	9.44818	9.57769
12 h after dark	7.422855	6.82025	8.02546