condition	mean	min	max
4 h after light	7.458403333333333	7.25555	7.58892
8 h after light	7.91677	7.716939999999999	8.02627
12 h after light	7.735813333333334	7.53511	7.84053
4 h after dark	8.078563333333333	7.99069	8.13557
8 h after dark	8.20619	8.11174	8.26642
12 h after dark	8.16068	7.86552	8.39845