Question: What is the number for the Channel 4 weekly rank when there are more than 2.19 million viewers for the episode "zero worship" which was earlier than episode 34?
SQL: SELECT COUNT("Channel 4 weekly rank a") FROM "2-12146637-4" WHERE "Viewers (millions)" > 2.19 AND "Title" = '"zero worship"' AND "Episode #" < 34.0;

Question: What is the average Channel 4 weekly rank for less than 2.19 million viewers on December 7, 2007?
SQL: SELECT AVG("Channel 4 weekly rank a") FROM "2-12146637-4" WHERE "Viewers (millions)" < 2.19 AND "Airdate" = 'December 7, 2007';

Question: What is the number of viewers in millions for the episode on october 10, 2008, and a Channel 4 weekly rank a smaller than 30?
SQL: SELECT COUNT("Viewers (millions)") FROM "2-12146637-4" WHERE "Airdate" = 'october 10, 2008' AND "Channel 4 weekly rank a" < 30.0;