condition	mean	min	max
4 h after light	8.015460000000001	7.815360000000001	8.37013
8 h after light	7.931690000000001	7.74729	8.22207
12 h after light	7.704433333333332	7.608789999999999	7.829219999999999
4 h after dark	7.86219	7.719469999999999	8.12439
8 h after dark	7.839009999999999	7.70295	8.105139999999999
12 h after dark	7.94832	7.74448	8.308069999999999