condition	mean	min	max
4 h after light	7.8835033333333335	7.622910000000001	8.03882
8 h after light	7.974676666666667	7.68681	8.186960000000001
12 h after light	7.872906666666667	7.4932300000000005	8.10701
4 h after dark	8.36503	8.196010000000001	8.53143
8 h after dark	8.274996666666667	8.1404	8.40789
12 h after dark	8.30128	8.17338	8.44168