condition	mean	min	max
4 h after light	7.67313	7.556719999999999	7.89888
8 h after light	8.101246666666666	7.64278	8.34655
12 h after light	8.39105	8.06024	8.64671
4 h after dark	8.383513333333333	7.958810000000001	8.64137
8 h after dark	8.37903	8.04963	8.60449
12 h after dark	7.908029999999999	7.80483	7.987769999999999