condition	mean	min	max
4 h after light	7.8661855	7.818088	7.914283
8 h after light	7.774585500000001	7.706043	7.843128
12 h after light	8.684616	8.126355	9.242877
4 h after dark	8.166993999999999	8.113438	8.22055
8 h after dark	8.3092725	8.169311	8.449234
12 h after dark	7.874601	7.874601	7.874601