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When choosing a time frame below a table will appear by analyte and you can choose to see the analyte by individual methods or if the analyte occurs in multiple methods
then you can choose all methods.
Choose by ONE Method will lead you to the method page displaying all the OBSP tools for that method- times series charts, box plots by analyte recovery overtime,
one box plot graph for entire method, recovery vs. concentration charts, false positive or false negative charts.
Choose by ALL Methods leads you to the multiple method package of three charts a box plot chart, a time series chart and a recovery vs. concentration chart.
Note: If an analyte of interest is not seen in the method listing, there is no OBSP data available for that analyte
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U.S. Department of the Interior |
U.S. Geological Survey
URL: https://bqs.usgs.gov/index.php
Project Contact Information: dbeaty@usgs.gov
Page Contact Information: Webmaster
Page Last Modified:
March 22, 2018
