CREATE TABLE table_2574 ("Sigma level" FLOAT, "Sigma  ( with 1.5\\u03c3 shift ) " CLOB, "DPMO" CLOB, "Percent defective" CLOB, "Percentage yield" CLOB, "Short-term C pk" CLOB, "Long-term C pk" CLOB)

What is the sigma (with 1.5 shift) when there are 69% defective?
SELECT "Sigma (with 1.5\u03c3 shift)" FROM table_2574 WHERE "Percent defective" = '69%'
SELECT "Sigma (with 1.5\u03c3 shift)" FROM "table_2574" WHERE "Percent defective" = '69%'