How heavy a base does a patio umbrella actually need?

This is the single most repeated point in community discussion. r/homeowners commenters say a 9-foot umbrella wants roughly an 80 lb base, and an offset/cantilever 9-10 foot model can need a 200 lb base, noting that 'even the best umbrella will blow over without a heavy, wide base.' Many cantilever models ship with a fillable base you load with sand or water.