2009 Most active graticules

The 2009 records for the most active graticules.

These were tracked by hand using two different measurements:

• the most expeditions (using Category:Expeditions)
• the most expeditions where somebody reached that day's geohashing coordinates (using Category:Coordinates reached).

Other measurements

Which is the most active city or urban area? Which is the most active country? We are just a graticule list away from having that information :)