condition	mean	min	max
4 h after light	6.266683333333334	6.2428300000000005	6.29049
8 h after light	6.425856666666666	6.36134	6.46901
12 h after light	6.35308	6.23773	6.50751
4 h after dark	6.529743333333333	6.47665	6.574610000000001
8 h after dark	6.55565	6.42284	6.6387100000000006
12 h after dark	6.773803333333333	6.71185	6.8175300000000005