SELECT MIN(total_viewers) FROM table_12995531_3 WHERE date_of_first_broadcast = "28 January 2010" AND episode_number = 1
Berapa total pemirsa di mana tanggal siaran pertama adalah 28 Januari 2010 dan nomor episode 1?
CREATE TABLE table_12995531_3 (total_viewers INTEGER, date_of_first_broadcast VARCHAR, episode_number VARCHAR)