                     <span class="string">[ n  x  E ]</span>
  nigp     (optional) individual <span class="string">noise</span> <span class="string">variance</span> <span class="string">terms</span>            <span class="string">[ n  x  E ]</span>
m          <span class="string">mean</span> <span class="string">of</span> <span class="string">the</span> <span class="string">test</span> <span class="string">distribution</span>                         <span class="string">[ D  x  1 ]</span>
s          <span 