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<h1>Example datasets from the NAFTA SOP published 2015</h1>
<div class="hidden name"><code>NAFTA_SOP_2015.Rd</code></div>
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<div class="ref-description">
<p>Data taken from US EPA (2015), p. 19 and 23.</p>
</div>
<pre class="usage"><span class='no'>NAFTA_SOP_2015</span></pre>
<h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h2>
<p>2 datasets with observations on the following variables.</p><dl class='dl-horizontal'>
<dt><code>name</code></dt><dd><p>a factor containing the name of the observed variable</p></dd>
<dt><code>time</code></dt><dd><p>a numeric vector containing time points</p></dd>
<dt><code>value</code></dt><dd><p>a numeric vector containing concentrations</p></dd>
</dl>
<h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>Source</h2>
<p>NAFTA (2011) Guidance for evaluating and calculating degradation kinetics
in environmental media. NAFTA Technical Working Group on Pesticides
<a href='https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/guidance-evaluating-and-calculating-degradation'>https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/guidance-evaluating-and-calculating-degradation</a>
accessed 2019-02-22</p>
<p>US EPA (2015) Standard Operating Procedure for Using the NAFTA Guidance to
Calculate Representative Half-life Values and Characterizing Pesticide
Degradation
<a href='https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/standard-operating-procedure-using-nafta-guidance'>https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/standard-operating-procedure-using-nafta-guidance</a></p>
<h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
<pre class="examples"><div class='input'> <span class='no'>nafta_evaluation</span> <span class='kw'><-</span> <span class='fu'><a href='nafta.html'>nafta</a></span>(<span class='no'>NAFTA_SOP_Appendix_D</span>, <span class='kw'>cores</span> <span class='kw'>=</span> <span class='fl'>1</span>)</div><div class='output co'>#> <span class='warning'>Warning: Calculation of the Jacobian failed for the cost function of the untransformed model.</span>
#> <span class='warning'>No t-test results will be available</span></div><div class='output co'>#> <span class='message'>The SFO model is rejected as S_SFO is equal or higher than the critical value S_c</span></div><div class='output co'>#> <span class='message'>The representative half-life of the IORE model is longer than the one corresponding</span></div><div class='output co'>#> <span class='message'>to the terminal degradation rate found with the DFOP model.</span></div><div class='output co'>#> <span class='message'>The representative half-life obtained from the DFOP model may be used</span></div><div class='input'> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/print'>print</a></span>(<span class='no'>nafta_evaluation</span>)</div><div class='output co'>#> Sums of squares:
#> SFO IORE DFOP
#> 1378.6832 615.7730 517.8836
#>
#> Critical sum of squares for checking the SFO model:
#> [1] 717.4598
#>
#> Parameters:
#> $SFO
#> Estimate Pr(>t) Lower Upper
#> parent_0 83.755751519 8.076390e-15 76.928220975 90.583282063
#> k_parent_sink 0.001703321 7.452357e-05 0.001108568 0.002617164
#>
#> $IORE
#> Estimate Pr(>t) Lower Upper
#> parent_0 9.685291e+01 NA 8.752855e+01 1.061773e+02
#> k__iore_parent_sink 8.403401e-14 NA 1.092058e-19 6.466429e-08
#> N_parent 6.684457e+00 NA 3.538510e+00 9.830404e+00
#>
#> $DFOP
#> Estimate Pr(>t) Lower Upper
#> parent_0 9.755655e+01 4.439930e-13 8.884447e+01 1.062686e+02
#> k1 4.240633e-02 3.554769e-02 1.414189e-02 1.271610e-01
#> k2 8.237928e-04 2.060933e-02 3.172784e-04 2.138925e-03
#> g 2.881037e-01 1.313715e-04 1.783967e-01 4.299694e-01
#>
#>
#> DTx values:
#> DT50 DT90 DT50_rep
#> SFO 407 1350 407
#> IORE 541 5190000 1560000
#> DFOP 429 2380 841
#>
#> Representative half-life:
#> [1] 841.4096</div><div class='input'> <span class='fu'><a href='https://www.rdocumentation.org/packages/graphics/topics/plot'>plot</a></span>(<span class='no'>nafta_evaluation</span>)</div><div class='img'><img src='NAFTA_SOP_2015-1.png' alt='' width='700' height='433' /></div></pre>
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<h2>Contents</h2>
<ul class="nav nav-pills nav-stacked">
<li><a href="#format">Format</a></li>
<li><a href="#source">Source</a></li>
<li><a href="#examples">Examples</a></li>
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