Branch of Quality Systems


Most Current Time Series Charts for NWQL LS 6434

The Time Series Charts
The charts provide OBSP recovery information for every analyte at different concentrations for every method OBSP assesses. The charts exhibit a Locally Weighted Scatterplot Smoothing (LOWESS) line. This line is used to help observe patterns and trends of the data over time. The time series charts also show bias and variability of the OSBP data. The most current time series charts in the table below will be overwritten periodically and will contain data that is currently being reviewed. All data is provisional and may change if the OBSP deems necessary.

There are two tables provided at the bottom of every time series chart that show statistical summaries.

Plotted Points Statistics Table
Description of the OBSP QA recoveries grouped by concentration level. The statistics in the table: mean, median, standard deviation and F-pseudosigma define bias and variability of the OBSP recoveries.

Sample Statistics Table
Counts (N) - The quantity of the variety of items.
Plotted - This number equals the total number in the above table.
Estimated Values - There are a number of reasons the laboratory will estimate (E) a result. If there are 100% of the results estimated the analyte is identified as a permanently estimated compound (analyte name in time series chart will be red).
Deleted Values - The laboratory may delete an entire sample or a single analyte for a number of reasons.
Spiked, Censored - A term for those samples that were spiked and correctly reported as less than a reporting level (possibly a raised reporting level) - the expected concentration was at a lower concentration than the censored result provided by the laboratory.
Spiked - The number of times the OBSP has submitted this analyte to the NWQL.
False Negative - The number of times the laboratory reports this analyte as not present in the sample when it is there.
Not Spiked - The number of times the OBSP has submitted a sample to the appropriate method, without this analyte.
False Positive - The number of times the laboratory reports this analyte as present when it is not in the sample.

The charts and data that you might secure from this U.S. Geological Survey (USGS) web page (identified as "OBSP") have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use.

Lab Schedule 6434 - Hormones in solids/sediment
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
11-Ketotestosterone 64467GM006 564-35-2
17-alpha-Estradiol 64468GM006 57-91-0
17-alpha-Ethynylestradiol 63207GM006 57-63-6
17-beta-Estradiol 63164GM006 50-28-2
3-beta-Coprostanol 63170GM006 360-68-9
4,4'-Bisphenl F 51296GM006 620-92-8
4,4'-Bisphenol S 51297GM006 80-09-1
4-Androstene-3,17-dione 64473GM006 63-05-8
Bisphenol A 63188GM006 80-05-7
Cholesterol 63196GM006 57-88-5
cis-Androsterone 63607GM006 53-41-8
Dihydrotestosterone 64484GM006 521-18-6
Epitestosterone 64477GM006 481-30-1
Equilenin 63204GM006 517-09-9
Equilin 64479GM006 474-86-2
Estriol 64480GM006 50-27-1
Estrone 63205GM006 53-16-7
Mestranol 63638GM006 72-33-3
Norethindrone 63644GM006 68-22-4
Progesterone 63657GM006 57-83-0
Testosterone 64485GM006 58-22-0
trans-Diethylstilbestrol 63620GM006 56-53-1

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