Seasonal campylobacter concentrations and seasonal mean monthly (30-day) rainfall totals for all sites. J,J,A, June, July, and August; S,O,N, September, October, and November; D,J,F, December, January, and February; M,A,M, March, April, and May; Campy, campylobacter; 30-d total ppt., 30-day total precipitation.