Nuclear weapon yield

Columns: Date | Name | Yield ( kt ) | Country | Significance
1945-07-16 | Trinity | 18-20 | USA | First fission device test , first plutonium implosion detonation | 1945-08-06 | Little Boy | 12-18 | USA | Bombing of Hiroshima , Japan , first detonation of a uranium gun-type device , first use of a nuclear device in combat | 1945-08-09 | Fat Man | 18-23 | USA | Bombing of Nagasaki , Japan , second detonation of a plutonium implosion device ( the first being the Trinity Test ) , second and last use of a nuclear device in combat | 1949-08-29 | RDS-1 | 22 | USSR | First fission weapon test by the USSR | 1952-10-03 | Hurricane | 25 | UK | First fission weapon test by the UK | 1952-11-01 | Ivy Mike | 10,400 | USA | First cryogenic fusion fuel staged thermonuclear weapon , primarily a test device and not weaponized | 1952-11-16 | Ivy King | 500 | USA | Largest pure-fission weapon ever tested

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