CREATE TABLE table_66979 ("Name" CLOB, "Years" CLOB, "Gender" CLOB, "Area" CLOB, "Authority" CLOB, "Decile" FLOAT, "Roll" FLOAT)

Name the authority when the decile is 6 for pongaroa school
SELECT "Authority" FROM table_66979 WHERE "Decile" = '6' AND "Name" = 'pongaroa school'
SELECT "Authority" FROM "table_66979" WHERE "Decile" = '6' AND "Name" = 'pongaroa school'