class="n">y</span><span class="p">))</span>
    <span class="nb">print</span><span class="p">(</span><span class="n">skill_score</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">))</span>
    <span class="nb">print</span><span class="p">(</span><span class="n">median_error</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">))</span>

    <span class="n">z0</span> <span cl