condition	mean	min	max
4 h after light	7.210323333333333	7.1006	7.36981
8 h after light	7.1574	7.030660000000001	7.4022
12 h after light	7.063090000000001	6.93986	7.233860000000001
4 h after dark	6.657353333333333	6.39011	6.8604899999999995
8 h after dark	6.523843333333333	6.290369999999999	6.89502
12 h after dark	6.6438266666666665	6.59317	6.70858