condition	mean	min	max
4 h after light	9.33893	9.15985	9.51859
8 h after light	9.63864	9.59022	9.70928
12 h after light	9.550716666666666	9.48413	9.66967
4 h after dark	9.203306666666666	9.18405	9.222489999999999
8 h after dark	9.1306	9.03149	9.18467
12 h after dark	9.268323333333333	8.970260000000001	9.48857