CREATE TABLE table_50292 ("Parameter" TEXT, "1st stage" TEXT, "2nd stage" TEXT, "3rd stage" TEXT, "4th stage" TEXT)

What is the Parameter that has the third phase of 0.50 m?
SELECT "Parameter" FROM table_50292 WHERE "3rd stage" = '0.50 m'
SELECT "Parameter" FROM "table_50292" WHERE "3rd stage" = '0.50 m'