James,
The Conadria may not be the best example to use to indicate desired angles due to the deformed main trunk, which was due to a deformed rooted cutting. I'm currently air layering off several branches to train new trees in the spring.
I had not come across any similar information, Thanks. I will observe the next group to be pruned.
The desired angles can be trained by tying the green flexible branches to stakes that are in the desired location, before they lignify and harden. If the angle is too narrow, the branch is pulled down, if too wide, they are tied to stakes in the correct up position. Once the wood lignifies and increases in diameter and strength the ties and stakes are removed.