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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>
<pre class="usage"><span class='va'>NAFTA_SOP_Appendix_B</span>
<span class='va'>NAFTA_SOP_Appendix_D</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>
<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='va'>nafta_evaluation</span> <span class='op'><-</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>
</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://rdrr.io/r/base/print.html'>print</a></span><span class='op'>(</span><span class='va'>nafta_evaluation</span><span class='op'>)</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 83.7558 1.80e-14 77.18268 90.3288
#> k_parent 0.0017 7.43e-05 0.00112 0.0026
#> sigma 8.7518 1.22e-05 5.64278 11.8608
#>
#> $IORE
#> Estimate Pr(>t) Lower Upper
#> parent_0 9.69e+01 NA 8.88e+01 1.05e+02
#> k__iore_parent 8.40e-14 NA 1.79e-18 3.94e-09
#> N_parent 6.68e+00 NA 4.19e+00 9.17e+00
#> sigma 5.85e+00 NA 3.76e+00 7.94e+00
#>
#> $DFOP
#> Estimate Pr(>t) Lower Upper
#> parent_0 9.76e+01 1.94e-13 9.02e+01 1.05e+02
#> k1 4.24e-02 5.92e-03 2.03e-02 8.88e-02
#> k2 8.24e-04 6.48e-03 3.89e-04 1.75e-03
#> g 2.88e-01 2.47e-05 1.95e-01 4.03e-01
#> sigma 5.36e+00 2.22e-05 3.43e+00 7.30e+00
#>
#>
#> DTx values:
#> DT50 DT90 DT50_rep
#> SFO 407 1350 407
#> IORE 541 5190000 1560000
#> DFOP 429 2380 841
#>
#> Representative half-life:
#> [1] 841.41</div><div class='input'> <span class='fu'><a href='https://rdrr.io/r/graphics/plot.default.html'>plot</a></span><span class='op'>(</span><span class='va'>nafta_evaluation</span><span class='op'>)</span>
</div><div class='img'><img src='NAFTA_SOP_2015-1.png' alt='' width='700' height='433' /></div></pre>
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