CREATE TABLE table_16547 ("Engine" TEXT, "Power ,  continuous" TEXT, "Critical altitude This is the highest altitude at which the engine can achieve its full continuous power rating. Above this altitude ,  power falls off with height as with a naturally aspirated engine . See Supercharger#Altitude effects for details." TEXT, "Power ,  takeoff" TEXT, "Compression ratio" TEXT, "Supercharger gear ratio" TEXT, "Octane rating" TEXT, "Dry weight" TEXT)

What was the compression ration when the engine was Wasp Jr. T1B2?
SELECT "Compression ratio" FROM table_16547 WHERE "Engine" = 'Wasp Jr. T1B2'
SELECT "Compression ratio" FROM "table_16547" WHERE "Engine" = 'Wasp Jr. T1B2'