This table gives median monthly concentrations of clopyralid, dicamba, MCPA, MCPP, 2,4-D and metolachlor (column headings) for 2011 (row headings).

Seasonal Pesticide Concentrations Red River 2011

Date	Clopyralid Median Concentrations (ng/L)	Dicamba Median Concentrations (ng/L)	MCPA Median Concentrations (ng/L)	MCPP Median Concentrations (ng/L)	2,4-D Median Concentrations (ng/L)	Metolachlor Median Concentrations (ng/L)
2011-01-04	7.45	2.81	2.55	1.02	16.8	1.73
2011-02-07	8.35	0.89	1.32	1.02	19.5	1.73
2011-03-07	7.09	0.89	2.11	1.02	19.5	1.73
2011-04-04	18.7	4.44	9.64	6.69	41.8	5.63
2011-05-02	11.9	7.01	4.87	1.02	52.1	8.84
2011-06-06	19.2	25.6	14.8	14.3	124	45.3
2011-07-04	223	125	254	8.13	140	287
2011-08-08	57.4	25.2	30.4	16.6	153	34
2011-09-06	68.4	3.21	7.46	2.46	39.7	12.9
2011-10-11	29.7	3.56	3.01	2.35		8.32
2011-11-07					19.6	1.73

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