condition	mean	min	max
4 h after light	7.53864	7.1277800000000004	7.78757
8 h after light	7.507573333333333	7.30737	7.809419999999999
12 h after light	7.217213333333333	6.3279	7.69077
4 h after dark	7.220066666666667	7.09938	7.35997
8 h after dark	7.10051	6.96875	7.214910000000001
12 h after dark	7.18528	7.02152	7.294169999999999