Graph

American Bittern
(Botaurus lentiginosus)

Listing of the individual data points that make up the graph
Year	Annual Index	Lower limit	Upper limit
1970	0.697	0.534	0.917
1971	0.714	0.556	0.986
1972	0.702	0.541	0.952
1973	0.673	0.53	0.902
1974	0.668	0.532	0.896
1975	0.647	0.508	0.836
1976	0.626	0.496	0.809
1977	0.61	0.484	0.782
1978	0.58	0.459	0.74
1979	0.579	0.462	0.724
1980	0.577	0.461	0.723
1981	0.552	0.446	0.689
1982	0.534	0.417	0.668
1983	0.544	0.444	0.692
1984	0.521	0.414	0.652
1985	0.516	0.413	0.647
1986	0.515	0.42	0.646
1987	0.521	0.427	0.699
1988	0.497	0.408	0.62
1989	0.503	0.415	0.646
1990	0.482	0.398	0.602
1991	0.467	0.381	0.575
1992	0.464	0.381	0.583
1993	0.447	0.358	0.564
1994	0.445	0.36	0.563
1995	0.459	0.376	0.594
1996	0.421	0.342	0.513
1997	0.445	0.368	0.571
1998	0.408	0.334	0.504
1999	0.398	0.325	0.485
2000	0.39	0.317	0.478
2001	0.383	0.308	0.472
2002	0.377	0.306	0.464
2003	0.376	0.304	0.469
2004	0.385	0.314	0.496
2005	0.376	0.304	0.487
2006	0.376	0.306	0.48
2007	0.367	0.297	0.479
2008	0.353	0.282	0.458
2009	0.342	0.27	0.44
2010	0.335	0.263	0.425
2011	0.333	0.26	0.432
2012	0.316	0.248	0.407
2013	0.314	0.242	0.406
2014	0.318	0.244	0.422
2015	0.307	0.232	0.395
2016	0.312	0.238	0.42

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