Previously I have looked at the pion mass peak vs energy(E12) in both the large and the small cells. In order to make sure the effect it consistent throughout the entirety of each region, small and large, I broke each up into different subsection in Eta and again plotted the pion mass peak vs energy.

I broke the small cell region up into five different subsections. In each section, the trend between pion mass and energy is the same. All plots had a slope of about .001 and had pion mass values ranging from about .12 GeV to about .16 GeV. These values are consistent with the results when taking the small cell region as a whole. Bellow are the figures for each subsection for run 81b.  

Due to fewer events, the large cell region was only able to be split into two subsections. Again, each subsection showed the same trend. The slops for both subsections were roughly .0025 with pion mass values ranging from .12 GeV to just under .24 GeV. Just like the small cell subsections, these values were consistent with the results from taking the large cell region as a whole. These two plots are shown below.

From this analysis, it seem as though the psuedorapidity doesn't have any effect on the energy dependence of the pion mass peak.