condition	mean	min	max
4 h after light	6.46219	5.96645	6.95793
8 h after light	8.404415	8.10928	8.69955
12 h after light	7.2281949999999995	6.93396	7.52243
4 h after dark	10.749775	9.83545	11.6641
8 h after dark	9.44918	8.86086	10.0375
12 h after dark	8.875	8.43026	9.31974