condition	mean	min	max
4 h after light	6.4986299999999995	6.372999999999999	6.593889999999999
8 h after light	6.904046666666667	6.76094	7.15212
12 h after light	6.911183333333334	6.804689999999999	7.1139
4 h after dark	6.705123333333333	6.63692	6.791939999999999
8 h after dark	6.5415	6.42954	6.681780000000001
12 h after dark	6.551323333333333	6.39202	6.7698