condition	mean	min	max
4 h after light	2172.9	2172.9	2172.9
8 h after light	1961.95	1725.4	2198.5
12 h after light	1605.6	1525.3	1685.9
4 h after dark	1317.3	1152.6	1482.0
8 h after dark	1300.85	1257.1	1344.6
12 h after dark	1621.65	1383.0	1860.3