Not forgetting, of course, the obvious bias of the veterans that by leaving out a huge collection of voices, namely those new to Phish and those younger fans who may or may not be having a completely different experience, the implication could be interpreted that you're weighting yourselves and your votes and opinions as potentially more valuable than those of noobs or those who are less active online. So a more extensive clarification on the sampling method would be welcome to explain and recognise the bias in the data collection part of the experimental design there. Regardless, I truly and sincerely laud the effort, most especially because I don't personally care about the results of ordinal-level data concerning these specific qualities of a nearly arbitrary collection of Phish shows.
-Another question: Why 2013?