What do you think "Red: Fletcher scaled to Prominent at .5 bar" refers to? I think you are the confused one here. Please check with Alan.
I stand correct Sig. BUT, looking at Alan's measured values, you see ~62 l/h at 0 bar. Let's take that value without the scaling factor. You still end up with ~27k l/d for 3BFs and ~36k l/d for 4 BFs.