Table 2. Number of samples collected each month at urban indicator site, Salado Creek (lower station) at San Antonio
[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 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 5 | 2 | 4 | 4 | 4 | 2 | 2 | 3 | 4 | 2 | 2 | 1 | ||
Nutrients | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 5 | 2 | 4 | 4 | 4 | 2 | 2 | 3 | 4 | 2 | 2 | 1 | ||
SOC/DOC | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 5 | 2 | 4 | 4 | 4 | 2 | 2 | 3 | 4 | 2 | 2 | 1 | ||
Suspended sediment | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 5 | 2 | 4 | 4 | 4 | 2 | 2 | 3 | 4 | 2 | 2 | 1 | ||
Pesticides | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 4 | 5 | 2 | 4 | 4 | 4 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | ||
VOCs | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 | 2 | 1 | 0 | 2 | 1 | 1 | 2 | 2 | 3 | 3 | 0 | 0 | 0 |
Back to:
Forward to: Table 3