ass="o">*</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">normal</span><span class="p">(</span><span class="n">size</span><span class="o">=</span><span class="p">(</span><span class="n">model</span><span class="o">.</span><span class="n">chr_system</span><span class="o">.</span><span class="n">getNumParticles</span><span class="p">(),</span> <span class="mi">3</span><span class="p">)),</span>
                        <span class="n"