Analysis of site or seasonal variability is difficult with such low numbers of positive samples. Overall Results for Giardia spp. Sampling Between June 1992 and December 1995, a total of 1569 samples for Giardia spp. Statistical summary of data collected within the watershed fo the New York City water supply between June 1992 and December 1995. Concentration values are repoted as Giardia spp.
Total values represent combined presumed and confirmed values.
Mean Max Mean Geo. 0.79 149.00 Total Crypto. 3600.00 Total Crypto. 512.00 Confirmed Crypto. Sampling at Different Land Uses Analysis of the data has also begun to indicate some discernible differences between sample sites.