class="w">    </span><span class="sd">&quot;&quot;&quot;Calculate a Nash-Sutcliffe-like skill score based on mean squared error</span>

<span class="sd">    As per the discussion in Murphy (1988) other reference forecasts (climatology,</span>
<span class="sd">    harmonic tide, etc.) are possible.</span>

<span class="sd">    Parameters</span>
<span class="sd">    ----------</span>
<span class="sd">    predictions, targets : array_like</span>
<span class="sd">        Time series or arrays to be analyzed</sp