Which U.S. State Capital?

It is commonly-known among baseball fans that the air quality in Denver creates a significant difference in offense. Balls fly around and out of that park. Star pitchers do not want to play for the Rockies because it will damage their stats (and therefore their value), and hitters are often penalized in the eyes of sports writers for getting a boost from Denver's air. Todd Helton, for example, is the best Rockies hitter of all-time and would probably already be in the Hall of Fame if he had the same stats with any other team, but he's still not in (although he got very close last time). Larry Walker was another surefire pick that had to wait longer than expected because he played so many games in Denver. So I'm sure the difference can be measured by an engineer.