Differences Among Sampling Networks
When using data from different sampling networks, it is
important to consider
The multiple sampling networks from which data were drawn
for these analyses vary in their objectives and sampling and
Data may not always be comparable.
Sampling, analysis, method detection limits, objectives, site
characteristics, etc. have changed over time.
Care is needed
in interpreting temporal and spatial trends.
Analysts need to gather, and understand, all metadata
prior to conducting analyses.