Nuclear weapon yield

Columns: Date | Name | Yield ( kt ) | Country | Significance
1953-08-12 | Joe 4 | 400 | USSR | First fusion weapon test by the USSR ( not staged ) | 1954-03-01 | Castle Bravo | 15,000 | USA | First dry fusion fuel staged thermonuclear weapon ; a serious nuclear fallout accident occurred ; largest nuclear detonation conducted by United States | 1955-11-22 | RDS-37 | 1,600 | USSR | First staged thermonuclear weapon test by the USSR ( deployable ) | 1957-05-31 | Orange Herald | 720 | UK | Largest boosted fission weapon ever tested . Intended as a fallback in megaton range in case British thermonuclear development failed | 1957-11-08 | Grapple X | 1,800 | UK | First ( successful ) staged thermonuclear weapon test by the UK | 1960-02-13 | Gerboise Bleue | 70 | France | First fission weapon test by France | 1961-10-31 | Tsar Bomba | 50,000 | USSR | Largest thermonuclear weapon ever tested - scaled down from its initial 100 Mt design by 50%

Example questions:
What is the yield of the nuclear weapon that was the code name Fat Boy of the first detonation of a nuclear device ? | What is the yield of the nuclear weapon that was the first test of a British atomic device named Hurricane ? | What is the yield of the nuclear weapon that was also known as Izdeliye 501 ( device 501 ) and First Lightning use by Russia ?

Answers:
18-20 | 25 | 22