condition	mean	min	max
4 h after light	6.782265000000001	6.19186	7.37267
8 h after light	9.34651	8.65972	10.0333
12 h after light	14.7541	13.6153	15.8929
4 h after dark	18.8076	17.3844	20.2308
8 h after dark	10.72813	8.15736	13.2989
12 h after dark	9.457985	8.70007	10.2159