condition	mean	min	max
4 h after light	2116.4	2116.4	2116.4
8 h after light	2014.75	1956.1	2073.4
12 h after light	1868.45	1866.4	1870.5
4 h after dark	1983.95	1771.1	2196.8
8 h after dark	1968.25	1957.6	1978.9
12 h after dark	1983.4	1900.2	2066.6