Table 1.  Number of samples collected each month at agriculture indicator site, Medina River at LaCoste

[SOC/DOC, suspended and dissolved organic carbon; VOCs, volatile organic compounds]

Type of sample

1996   1997   1998
Apr. May June July Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Apr.
Major ions 1 1 1 0 1 1 1 1 1 1 0 2 3 5 3 4 4 4 1 1 1 1 1 2 1
Nutrients 1 1 1 0 1 1 1 1 1 1 0 2 3 5 3 4 4 4 1 1 1 1 1 2 1
SOC/DOC 1 1 1 0 1 1 1 1 1 1 0 2 3 5 3 4 4 4 1 1 1 1 1 2 1
Suspended sediment 1 1 1 0 1 1 1 1 1 1 0 2 3 5 3 4 4 4 1 1 1 1 1 2 1
Pesticides 0 0 0 0 0 0 0 0 0 1 0 2 3 5 3 4 4 4 1 1 1 0 0 2 1
VOCs 0 0 0 0 0 0 0 0 0 1 0 2 0 0 1 0 0 0 0 1 1 0 0 1 0

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