I've written a few technical books and my personal most optimistic estimate is 1h/page writing first draft and 2hr/page editing. This when I know exactly what I

I've written a few technical books and my personal most optimistic estimate is 1h/page writing first draft and 2hr/page editing. This when I know exactly what I want to say (no more research, code usually done) and have a plan (headings ready, just filling the blanks) But English is not my first language, can't a/b test for this variable. With first drafts I don't stop to edit - just let it out on paper as fast as possible.