The value shown in game, used to solve back for the IV range.
Use the type-effectiveness mode to work this out, then enter it here.
Niantic publishes one CPM per half level; read it for the level you are checking.
The species catch rate from the Pokedex data you are using (3 for legendaries, 255 for Caterpie).
2 for sleep or freeze, 1.5 for paralysis, poison or burn, otherwise 1.