condition	mean	min	max
4 h after light	2124.5	2124.5	2124.5
8 h after light	2113.05	2091.7	2134.4
12 h after light	1943.8	1712.6	2175.0
4 h after dark	1977.15	1966.7	1987.6
8 h after dark	1839.2	1784.5	1893.9
12 h after dark	1641.45	1528.7	1754.2