condition	mean	min	max
4 h after light	7.776303333333334	7.6025	7.869680000000001
8 h after light	7.70697	7.610519999999999	7.76233
12 h after light	7.29524	6.754239999999999	7.72796
4 h after dark	8.192146666666666	7.97815	8.41468
8 h after dark	8.273806666666667	8.04078	8.42078
12 h after dark	8.57254	8.35885	8.78289