CREATE TABLE table_17904 ("Series number" TEXT, "Episode number" FLOAT, "Date of first broadcast" TEXT, "Total viewers" FLOAT, "Series average" FLOAT)

what is the total viewers where the date of first broadcast is 28 january 2010 and the episode number is 1?
SELECT MIN("Total viewers") FROM table_17904 WHERE "Date of first broadcast" = '28 January 2010' AND "Episode number" = '1'
SELECT MIN("Total viewers") FROM "table_17904" WHERE "Date of first broadcast" = '28 January 2010' AND "Episode number" = '1'