condition	mean	min	max
4 h after light	8.4230685	8.338166	8.507971
8 h after light	9.035202	8.462762	9.607642
12 h after light	8.296495499999999	8.145921	8.44707
4 h after dark	8.585762	8.573861	8.597663
8 h after dark	8.026125	7.589488	8.462762
12 h after dark	8.2675	8.2675	8.2675