There is a problem in these numbers. You are looking at the vote server's stats. They don't always have accurate numbers. The server keeps track of the votes received and is more accurate about who is voting for the server since you also have to be active on the server for the top voter position. For example, i know I voted in each of the servers you posted all 30 days, but some of them don't credit all of my (or in some cases, your) votes on that "history" screen, so which numbers are more accurate? A vote server's stats that you can't verify, or the server's records of vote messages from those servers that it received and acted upon?
Considering that one server says you voted 48 times in a 30 day window, and at least 2 show you and I voted way less than 30 times in 30 days, I wouldn't trust their numbers for any purpose.