What this site publishes
Two kinds of figure, held to different standards: measurements this site takes, and figures it reports from elsewhere.
A measurement is anything the instrument produces from your own input — a rate, an interval, a gap between presses. Those are computed in your browser from performance.now() and are reproducible on demand: run the same interval again and you will get a comparable number. The method is published on the About page and the clock source and resolution are printed under the instrument itself.
A reported figure is anything quoted from outside — an average, a world record, a switch specification, a game's combat behaviour. Those carry the standard described below, which is lower, and are labelled as such wherever the distinction matters.