condition	mean	min	max
4 h after light	1928.5	1928.5	1928.5
8 h after light	1558.1999999999998	1555.6	1560.8
12 h after light	1570.05	1494.0	1646.1
4 h after dark	1608.3000000000002	1546.7	1669.9
8 h after dark	1659.1	1458.5	1859.7
12 h after dark	1718.65	1512.9	1924.4