condition	mean	min	max
4 h after light	8.9212275	8.605562	9.236893
8 h after light	8.631997	8.034653	9.229341
12 h after light	8.3247265	8.043891	8.605562
4 h after dark	9.387753	9.138912	9.636594
8 h after dark	8.526154	8.446746	8.605562
12 h after dark	8.948263	8.948263	8.948263