condition	mean	min	max
4 h after light	6.75097	6.54365	6.885339999999999
8 h after light	6.599593333333333	6.4026	6.71053
12 h after light	6.339413333333333	6.205769999999999	6.50778
4 h after dark	6.67594	6.21561	6.9895
8 h after dark	6.727176666666667	6.32799	7.0163
12 h after dark	6.66104	6.52262	6.79148