A Diatom - Obs. by Year - Montana Field Guide

*Excludes Observations that spanned multiple years

Total	56
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	1
1999	0
2000	4
2001	8
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2009	1
2010	10
2011	3
2012	15
2013	5
2014	4
2015	4
2016	1
2017	0
2018	0
2019	0
2020	0
2021	0
2022	0
2023	0
2024	0