ducts for the hypothesis:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>           mb         bh        bl         nh</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> mb  502.8267 -228.14667 -626.6267  135.43333</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> bh -228.1467  229.90667  292.2800  -66.06667</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> bl -626.6267  292.28000  803.2933 -180.73333</span>
<span class="r-out co"><span class="r-pr">#&gt;</sp