Graph

Blue-headed Vireo
(Vireo solitarius)

Listing of the threshold values that appear on the graph
Population below lowest acceptable level		Goal
0.706		2.45

Listing of the individual data points that make up the graph
Year	Annual Index	Lower limit	Upper limit
1970	0.537	0.418	0.89
1971	0.606	0.48	0.93
1972	0.686	0.544	1.08
1973	0.61	0.488	0.943
1974	0.833	0.633	1.25
1975	0.705	0.565	1.12
1976	0.708	0.584	0.915
1977	0.728	0.595	1.48
1978	0.743	0.618	1.63
1979	0.781	0.645	0.987
1980	0.779	0.653	0.967
1981	0.773	0.65	0.965
1982	0.817	0.675	1.3
1983	0.866	0.715	1.1
1984	0.846	0.701	1.08
1985	0.896	0.74	1.12
1986	0.844	0.71	1.06
1987	1.02	0.839	1.31
1988	1.06	0.873	1.34
1989	1.07	0.9	1.32
1990	1.07	0.897	1.31
1991	1.08	0.909	1.29
1992	1.14	0.961	1.4
1993	1.23	1.04	1.51
1994	1.33	1.12	1.63
1995	1.43	1.21	1.8
1996	1.23	1.04	1.51
1997	1.68	1.4	2.21
1998	1.49	1.28	1.78
1999	1.51	1.32	1.76
2000	1.54	1.35	1.79
2001	1.76	1.51	2.12
2002	1.79	1.51	2.26
2003	1.74	1.52	2.01
2004	1.8	1.56	2.08
2005	2.25	1.86	2.91
2006	2.16	1.85	2.59
2007	2.12	1.86	2.46
2008	2.23	1.96	2.6
2009	2.34	2.05	2.69
2010	2.45	2.16	2.79
2011	2.48	2.15	2.9
2012	2.82	2.45	3.28
2013	2.9	2.57	3.33
2014	2.92	2.58	3.39
2015	2.74	2.4	3.17
2016	2.63	2.28	3.14

Notes on numeric data: Ex represents 10 to the power of x; For example 1.2345E-2 is equivalent to 0.012345