condition	mean	min	max
4 h after light	9.0896765	8.97885	9.200503
8 h after light	8.2725545	7.938152	8.606957
12 h after light	8.5267775	8.0884	8.965155
4 h after dark	8.6287565	8.621213	8.6363
8 h after dark	8.677659	7.561194	9.794124
12 h after dark	8.622087	8.622087	8.622087