condition	mean	min	max
4 h after light	6.278613333333333	6.26224	6.30145
8 h after light	6.455306666666667	6.15412	6.694310000000001
12 h after light	6.648796666666667	6.51318	6.73832
4 h after dark	6.67725	6.454619999999999	6.813280000000001
8 h after dark	6.653110000000001	6.351030000000001	6.98385
12 h after dark	6.505796666666667	6.30999	6.71661