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We briefly describe two statistical hadronization models, based respectivelyon the presence and absence of light quark chemical equilibrium, used toanalyze particle yields in heavy ion collisions. We then try to distinguishbetween these models using $K/\pi$ fluctuations data. We find that while thenon-equilibrium model provides an acceptable description of fluctuations at topSPS and RHIC energies, both models considerably under-estimate fluctuations atlow SPS energies.Comment: References updated Poster in QM2006 conference, Shangha

A STATISTICAL MODEL ANALYSIS OF K/π FLUCTUATIONS IN HEAVY ION COLLISIONS