></td>
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<td valign="top" align="left"><tt>data&nbsp;&nbsp;&nbsp;</tt></td><td>   field of integrands to be summed over <br>&nbsp;&nbsp;&nbsp;<span class="type">[real]</span></td>
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<td valign="top" align="left"><tt>wt&nbsp;&nbsp;&nbsp;</tt></td><td>   the weight function to be evaluated at summation <br>&nbsp;&nbsp;&nbsp;<span class="type">[real]</span></td>
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<td valign="top" align="left"><tt>is, js&nbsp;&nbsp;&nbsp;</tt></td><td>   starting i,j indices over which summation is 
