condition	mean	min	max
4 h after light	1557.5	1557.5	1557.5
8 h after light	1472.05	1311.5	1632.6
12 h after light	1290.35	1176.5	1404.2
4 h after dark	1520.85	1154.8	1886.9
8 h after dark	1754.2	1389.5	2118.9
12 h after dark	1794.15	1658.6	1929.7