The χ<sup>2</sup> distributions differ (do not overlap) for the six alternate hypotheses (Table 5) from (with) that of the null hypothesis (all1F-2E).

<p>Equilibration and accumulation runs of the ensemble method used to calculate these distributions are described in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0020671#s2" target="_blank">Materials and Methods</a>. The label all3643s-2E is an abbreviation for model all3643self-2E in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0020671#pone-0020671-t005" target="_blank">Table 5</a>.</p>