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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>
    </div>

    <div class="ref-description">
    <p>Data taken from US EPA (2015), p. 19 and 23.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="va">NAFTA_SOP_Appendix_B</span></span>
<span>  <span class="va">NAFTA_SOP_Appendix_D</span></span></code></pre></div>
    </div>

    <div id="format">
    <h2>Format</h2>
    <p>2 datasets with observations on the following variables.</p><dl><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></div>
    <div id="source">
    <h2>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" class="external-link">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" class="external-link">https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/standard-operating-procedure-using-nafta-guidance</a></p>
    </div>

    <div id="ref-examples">
    <h2>Examples</h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span>  <span class="va">nafta_evaluation</span> <span class="op">&lt;-</span> <span class="fu"><a href="nafta.html">nafta</a></span><span class="op">(</span><span class="va">NAFTA_SOP_Appendix_D</span>, cores <span class="op">=</span> <span class="fl">1</span><span class="op">)</span></span></span>
<span class="r-msg co"><span class="r-pr">#&gt;</span> The SFO model is rejected as S_SFO is equal or higher than the critical value S_c</span>
<span class="r-msg co"><span class="r-pr">#&gt;</span> The representative half-life of the IORE model is longer than the one corresponding</span>
<span class="r-msg co"><span class="r-pr">#&gt;</span> to the terminal degradation rate found with the DFOP model.</span>
<span class="r-msg co"><span class="r-pr">#&gt;</span> The representative half-life obtained from the DFOP model may be used</span>
<span class="r-in"><span>  <span class="fu"><a href="https://rdrr.io/r/base/print.html" class="external-link">print</a></span><span class="op">(</span><span class="va">nafta_evaluation</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Sums of squares:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>       SFO      IORE      DFOP </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1378.6832  615.7730  517.8836 </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Critical sum of squares for checking the SFO model:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 717.4598</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Parameters:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $SFO</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>          Estimate   Pr(&gt;t)    Lower   Upper</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> parent_0  83.7558 1.80e-14 77.18268 90.3288</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> k_parent   0.0017 7.43e-05  0.00112  0.0026</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> sigma      8.7518 1.22e-05  5.64278 11.8608</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $IORE</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                Estimate Pr(&gt;t)    Lower    Upper</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> parent_0       9.69e+01     NA 8.88e+01 1.05e+02</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> k__iore_parent 8.40e-14     NA 1.79e-18 3.94e-09</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> N_parent       6.68e+00     NA 4.19e+00 9.17e+00</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> sigma          5.85e+00     NA 3.76e+00 7.94e+00</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $DFOP</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>          Estimate   Pr(&gt;t)    Lower    Upper</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> parent_0 9.76e+01 1.94e-13 9.02e+01 1.05e+02</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> k1       4.24e-02 5.92e-03 2.03e-02 8.88e-02</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> k2       8.24e-04 6.48e-03 3.89e-04 1.75e-03</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> g        2.88e-01 2.47e-05 1.95e-01 4.03e-01</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> sigma    5.36e+00 2.22e-05 3.43e+00 7.30e+00</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> DTx values:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>      DT50    DT90 DT50_rep</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> SFO   407    1350      407</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> IORE  541 5190000  1560000</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> DFOP  429    2380      841</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Representative half-life:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 841.41</span>
<span class="r-in"><span>  <span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><span class="op">(</span><span class="va">nafta_evaluation</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="NAFTA_SOP_2015-1.png" alt="" width="700" height="433"></span>
</code></pre></div>
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