condition	mean	min	max
4 h after light	6.80446	6.48532	7.18358
8 h after light	6.884860000000001	6.48686	7.195010000000001
12 h after light	6.744176666666666	6.597389999999999	6.832489999999999
4 h after dark	6.793833333333334	6.48601	6.9809
8 h after dark	6.82006	6.52386	7.0433
12 h after dark	6.47177	6.42416	6.56545