I have to disagree; average is not a good way to measure. I have written approximately 6,000 lines of code (including empty lines but excluding some generated code) over the past few weeks. Yes, I write design documents before coding, and most of the code is completed within a few days. I definitely spend a lot of time debugging, but almost all of those activities have been constrained to code. Test cases are very helpful in making the process clean. I use Neovim inside iTerm2, so all those activities are done within terminal. By maximizing productivity through the use of the keyboard, I can eliminate many dependencies, such as the mouse and multiple displays. I believe dependencies are a source of distractions.

Most importantly, writing helps thinking. When I am stuck, I just write random comments (which I delete later) in the editor to help me think.