CREATE TABLE table_48370 ("Date of release" FLOAT, "Title" CLOB, "Label" CLOB, "Oricon peak" FLOAT, "RIAA cert." CLOB)

WHAT IS THE AVERAGE DATE OF RELEASE FOR THICKSKIN?
SELECT AVG("Date of release") FROM table_48370 WHERE "Title" = 'thickskin'
SELECT AVG("Date of release") FROM "table_48370" WHERE "Title" = 'thickskin'