Peter says that we can use this method if villain folds a lot to flop raises. My question is "What is a lot?" Just a ballpark figure will do.

In PokerTracker 4 this stat is called "Fold to Raise after F CBet". Peter goes into all stats deeply that he uses in The Grinder's Manual but, after doing a search and checking the book, I cannot find this one. If anyone finds it please let me know.