condition	mean	min	max
4 h after light	1936.0	1936.0	1936.0
8 h after light	1840.75	1829.0	1852.5
12 h after light	1982.25	1801.2	2163.3
4 h after dark	1768.9	1543.1	1994.7
8 h after dark	1628.6	1577.6	1679.6
12 h after dark	1512.5	1455.5	1569.5