Table:
text: Operation Hardtack II
Test Blasts
Hardtack II Tests
Name_ Location_ Elevation_Height Delivery Purpose Yield
Neptune NTS Area 12c metres (ft) - metres (ft) underground tunnel one-point safety test 115 tons
Hamilton NTS Area 5 metres (ft) + metres (ft) tower weapons development 1.2 tons
Logan NTS Area 12e metres (ft) - metres (ft) underground tunnel weapons development 5 kilotons
Dona Ana NTS Area 7b metres (ft) + metres (ft) balloon weapons development 37 tons
Vesta NTS Area 9e metres (ft) + 0 surface one-point safety test 24 tons
Rio Arriba NTS Area 3s metres (ft) + metres (ft) underground tunnel weapons development 90 tons
San Juan NTS Area 3p metres (ft) - metres (ft) underground shaft one-point safety test 0

Question: What was the yield for an explosion located in NTS Area 3s in Operation Hardtack II?