ning multi-scale non-tidal background energy</span>
<span class="sd">    that has a small tide with noisy, river-influenced amplitude and subtide&quot;&quot;&quot;</span>
    <span class="n">c1</span> <span class="o">=</span> <span class="mf">3.5</span>
    <span class="n">c2</span> <span class="o">=</span> <span class="mf">5.5</span>
    <span class="n">c3</span> <span class="o">=</span> <span class="mf">0.0002</span>
    <span class="n">c4</span> <span class="o">*=</span> <span class="mf">2.</span><span c