condition	mean	min	max
4 h after light	7.5303415000000005	7.21734	7.843343
8 h after light	8.097289	7.925173	8.269405
12 h after light	8.4763015	7.681766	9.270837
4 h after dark	7.864635	7.833347	7.895923
8 h after dark	7.880371	7.282831	8.477911
12 h after dark	7.407734	7.407734	7.407734