condition	mean	min	max
4 h after light	8.530536666666666	8.416960000000001	8.61045
8 h after light	8.936720000000001	8.750810000000001	9.05306
12 h after light	9.35868	9.20885	9.57616
4 h after dark	8.835583333333334	8.77102	8.87942
8 h after dark	8.62329	8.58548	8.69847
12 h after dark	8.438833333333333	8.35758	8.496319999999999