Ancillary Data

Ancillary datasets include, "Coordinates," "Qualifiers," "Site_Directory," and "Units." Geographic coordinates recorded at each sampled location were compiled into the dataset "Coordinates." A complete list and explanation of symbols used to qualify reported concentrations is contained within the dataset, "Qualifiers." The "Site_Directory" dataset contains general overview information about each of the sampled sites including the site number, stream name, river meter, and types of datasets available for each sampled location in the database. Units for concentrations reported and other physical measures recorded about the data are defined in the "Units" dataset.