(<span class="st">&#39;wfrierson/wmm&#39;</span>)</span></code></pre></div>
</div>
<div id="usage" class="section level1">
<h1>Usage</h1>
<p>In v1.1.3, the only exported function is
<code>GetMagneticFieldWMM</code>, which returns the orthogonal vector
components of the main magnetic field (in nT) and secular variation
field (in nT/yr) as predicted by WMM. The magnetic field elements,
<em>h</em>, <em>f</em>, <em>i</em>, and <em>d</em> (as well as their
secular variation) are returned as well.</p>
<p>Example 