The dorsiflexion / plantarflexion part looks off. Dorsiflexion somewhere between 12-3 and possibly around 6. Plantarflexion on the upstroke. I'd also think you'd start using your knee extensors earlier.
I think there are sensors you can attach that measure this sort of thing. At least there are ones you can run with to test for biomechanical abnormalities in the running gait (allows you to look at snapshots I think).