condition	mean	min	max
4 h after light	6.689406666666667	6.39421	6.954689999999999
8 h after light	6.94278	6.65977	7.239730000000001
12 h after light	6.92634	6.35104	7.2971699999999995
4 h after dark	7.4022266666666665	7.034839999999999	7.848260000000001
8 h after dark	7.290023333333334	6.92788	7.62741
12 h after dark	7.110243333333333	6.24439	7.6676