Kinematics of Felix Baumgartner's Jump

Today we have collected datas from the video of Felix Baumgartner's jump (http://www.youtube.com/watch?v=Xe7TKEAa_24). Here the results of our analysis.
Unfortunately we have speed datas only after 21s from the beginning. From our graphs we have calculated Felix's acceleration from the 21st second to the 26th of the motion (the slope of the line).
It's 8.7 m/s2 (up there gravity is slightly smaller. But drag is also at work, I guess).

Integrating this datas we can have displacement vs time, derivating we can calculate acceleration .