condition	mean	min	max
4 h after light	1137.9	1137.9	1137.9
8 h after light	1151.35	1085.0	1217.7
12 h after light	1322.65	1289.2	1356.1
4 h after dark	1677.3	1366.5	1988.1
8 h after dark	1861.15	1743.0	1979.3
12 h after dark	1687.85	1556.4	1819.3