CREATE TABLE table_44965 ("Pollutant" TEXT, "Type" TEXT, "Standard" TEXT, "Averaging Time" TEXT, "Regulatory Citation" TEXT)

what is the averaging time when the regulatory citation is 40 cfr 50.4(b)?
SELECT "Averaging Time" FROM table_44965 WHERE "Regulatory Citation" = '40 cfr 50.4(b)'
SELECT "Averaging Time" FROM "table_44965" WHERE "Regulatory Citation" = '40 cfr 50.4(b)'