condition	mean	min	max
4 h after light	8.3673215	8.226672	8.507971
8 h after light	7.714949	7.647899	7.781999
12 h after light	8.8360885	8.561609	9.110568
4 h after dark	7.195285999999999	6.747731	7.642841
8 h after dark	7.987773499999999	7.832213	8.143334
12 h after dark	7.961489	7.961489	7.961489