condition	mean	min	max
4 h after light	8.070885	7.39818	8.74359
8 h after light	8.10372	7.31188	8.89556
12 h after light	8.606415	7.6075	9.60533
4 h after dark	9.832384999999999	9.61817	10.0466
8 h after dark	9.881915	9.87888	9.88495
12 h after dark	9.651444999999999	9.20929	10.0936