condition	mean	min	max
0 h after light	9.63288	8.78866	10.4771
4 h after light	8.88356	8.68181	9.08531
8 h after light	7.81125	7.19571	8.42679
4 h after dark	9.59514	9.21035	9.97993
8 h after dark	9.64153	9.02656	10.2565
12 h after dark	8.97684	8.94033	9.01335