">(</span><span class="n">IN</span><span class="p">)</span> 	<span class="kd">::</span> <span class="n">R0</span>
  <span class="c">!! R-coordinate of center of 2D Gaussian</span>
  <span class="kt">REAL</span><span class="p">(</span><span class="n">rp</span><span class="p">),</span> <span class="k">INTENT</span><span class="p">(</span><span class="n">IN</span><span class="p">)</span> 	<span class="kd">::</span> <span class="n">sigR</span>
  <span class="c">!! Variance of first dimension of 2D Gaussian</spa