condition	mean	min	max
4 h after light	1826.3	1826.3	1826.3
8 h after light	1815.35	1730.4	1900.3
12 h after light	1694.5500000000002	1395.9	1993.2
4 h after dark	1720.9	1571.6	1870.2
8 h after dark	1914.25	1843.3	1985.2
12 h after dark	1899.15	1894.6	1903.7