One number per lane, built from what readers are actually doing. Pick a lane below and you get its opportunity score and rank, the greenlight band, the money shape of the lane (typical price, Kindle Unlimited share, 30-day demand), the heat level readers expect, and the length and series shape that sell there.
Every lane score is composed from engines that already run nightly: relative opportunity across every covered lane, the absolute greenlight board used by the Opportunity Finder, the reader heat-expectation profile, and the length/series sweet spot. Nothing here is an opinion or an estimate typed in by hand — each number is counted from the corpus below (revenue is modelled from sales rank) and moves when the corpus moves.