condition	mean	min	max
4 h after light	1777.5	1777.5	1777.5
8 h after light	2029.0	1861.6	2196.4
12 h after light	1741.1	1600.8	1881.4
4 h after dark	1692.6	1585.6	1799.6
8 h after dark	1377.85	1278.9	1476.8
12 h after dark	1420.95	1399.7	1442.2