condition	mean	min	max
4 h after light	7.797508499999999	7.637255	7.957762
8 h after light	7.820162	7.464977	8.175347
12 h after light	8.7049035	8.581312	8.828495
4 h after dark	7.9986365	7.649153	8.34812
8 h after dark	7.9348955	7.889481	7.98031
12 h after dark	8.381048	8.381048	8.381048