condition	mean	min	max
4 h after light	1499.4	1499.4	1499.4
8 h after light	1511.9	1329.5	1694.3
12 h after light	1512.1	1403.7	1620.5
4 h after dark	1906.35	1784.5	2028.2
8 h after dark	1964.65	1931.8	1997.5
12 h after dark	1699.95	1617.7	1782.2