Ok, I can accept all that.
You are saying that the CB was moved for reasons to do with the terrain, but are you also saying that the original intention was that the CB would be where the 23.5 degree line extends just below it?
Because the avenue is now 19.5 degrees (as you have measured it) to meet the elvated CB, still this avenue would have been 23.5 degrees if the CB had remained at the original site.
Is that correct?
This is all I want to know at this stage.