Table:
text: List of artificial radiation belts
List of Artificial Radiation Belts
List of Artificial Radiation Belts
Explosion Location_ Date_ Yield_approximate Altitude_km Nation_of_Origin
Hardtack Teak Johnston Island ( Pacific ) 1958-08-01 3.8 megatons 76.8 United States
Hardtack Orange Johnston Island ( Pacific ) 1958-08-12 3.8 megatons 43 United States
Argus I South Atlantic 1958-08-27 1-2 kilotons 200 United States
Argus II South Atlantic 1958-08-30 1-2 kilotons 256 United States
Argus III South Atlantic 1958-09-06 1-2 kilotons 539 United States
Starfish Prime Johnston Island ( Pacific ) 1962-07-09 1.4 megatons 400 United States
K-3 Kazakhstan 1962-10-22 300 s kiloton 290 USSR
K-4 Kazakhstan 1962-10-28 300 s kiloton 150 USSR

Question: What was Hardtack Teak's explosion altitude in the list of artificial radiation belts?

Question: What was the magnitude of the event between 1962-07-09 and 1962-07-11 for the artificial radiation belt list?

Question: What was the yield of 1.4 megatons under the list of artificial radiation belts?

Question: What was the yield of the K-4 explosion of the list of artificial radiation belts?

Question: Which explosion had a height of 539 km from the list of artificial radiation belts?