condition	mean	min	max
4 h after light	7.698973333333333	7.494089999999999	7.80739
8 h after light	7.697596666666667	7.3853100000000005	7.929989999999999
12 h after light	7.86606	7.58358	8.193539999999999
4 h after dark	7.44081	7.231669999999999	7.75137
8 h after dark	7.3832699999999996	7.09417	7.705089999999999
12 h after dark	7.011466666666666	6.77457	7.1799100000000005