cleaning up debug stmts
more cleanup
non-FELZ features match fairly well too. 8% or better, with tolerance=0.1 ... except, roughly the same issue as before with the hog[1:10] features being 10-16% different. Though, I notice that there's a smoother change in the diff for non-FELZ than for FELZ. I wonder if the non-FELZ is actually using FELZ for the first 10 hog levels.
playing more with csv diffs