Graph

American Bittern
(Botaurus lentiginosus)

Listing of the individual data points that make up the graph
Year	Annual Index	Lower limit	Upper limit
1970	1.22	0.576	3.93
1971	1.46	0.713	4.2
1972	1.08	0.553	2.64
1973	1.15	0.634	2.3
1974	2.25	1.03	5.8
1975	1.83	0.889	4.62
1976	1.63	0.771	4.15
1977	1.04	0.539	2.27
1978	0.959	0.504	2
1979	1.89	0.975	4.2
1980	0.832	0.456	1.89
1981	0.762	0.409	1.56
1982	0.466	0.262	0.946
1983	1.03	0.55	2.21
1984	1.61	0.807	3.39
1985	0.806	0.434	1.64
1986	0.799	0.422	1.74
1987	0.942	0.432	2.43
1988	0.82	0.41	1.72
1989	0.418	0.238	0.784
1990	0.857	0.439	1.71
1991	0.701	0.39	1.4
1992	0.626	0.363	1.15
1993	0.472	0.266	0.907
1994	0.531	0.307	0.981
1995	0.666	0.367	1.24
1996	0.557	0.31	1.05
1997	0.647	0.36	1.26
1998	0.53	0.296	0.984
1999	0.491	0.295	0.837
2000	0.698	0.436	1.16
2001	0.473	0.261	0.865
2002	0.3	0.16	0.564
2003	0.311	0.168	0.586
2004	0.624	0.301	1.4
2005	1.29	0.735	2.58
2006	0.796	0.437	1.44
2007	1.01	0.513	2.2
2008	1.13	0.666	1.96
2009	0.584	0.332	1.14
2010	0.649	0.363	1.26
2011	0.835	0.451	1.57
2012	0.649	0.332	1.53
2013	0.733	0.362	1.57
2014	1.05	0.548	2.29
2015	0.654	0.325	1.58
2016	0.471	0.249	0.895

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