A Diatom - Obs. by Year - Montana Field Guide

*Excludes Observations that spanned multiple years

Total	48
Pre 1970	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	1
2000	2
2001	5
2002	4
2003	5
2004	2
2005	2
2006	1
2007	0
2008	5
2009	0
2010	8
2011	3
2012	3
2013	4
2014	1
2015	0
2016	1
2017	1
2018	0
2019	0
2020	0
2021	0
2022	0
2023	0
2024	0