A quick review of Jenson Button's McLaren telemetry from the German Grand Prix last year, showing gear selection (colour) and pBrakeF/brake use (node size):
Of course, it's not really of much use for working out how to drive the circuit being used this year...
Data was grabbed from the McLaren F1 Live Dashboard during the race and is Copyright (©) McLaren Marketing Ltd 2010 (I think? Or possibly Vodafone McLaren Mercedes F1 2010(?)). Last year, I think that speed, throttle and brake data were sponsored by Vodafone; I'm not sure how it stands this year.
As ever, thanks to @bencc for grabbing the data.