Chess metrics - monitoring personal progress - Part 2

Here is another graph I generated based on my personal collection of games - this time it's my rating fluctuation on chessplanet server in the year 2007. And that's something that Chessbase or similar products I am aware of don't even support. It's interesting to see that the peak comes in May - the time when I was preparing for the Keres Memorial in Vancouver, so I put a bit extra time into studying chess - and I suppose that extra effort caused my blitz rating to go a bit up as well.