Question: How many items are listed under viewers column when the bbd three weekly ranking was 1?
SQL: SELECT COUNT("Viewers") FROM "1-24399615-4" WHERE "BBC Three weekly ranking" = '1';

Question: What episode number had a cable ranking of 8?
SQL: SELECT MIN("Episode no.") FROM "1-24399615-4" WHERE "Cable rank" = '8';

Question: What date did the episode air that had N/A for it's bbc three weekly ranking?
SQL: SELECT "Airdate" FROM "1-24399615-4" WHERE "BBC Three weekly ranking" = 'N/A';

Question: What date did the episode air that had a ranking of 17 for cable?
SQL: SELECT "Airdate" FROM "1-24399615-4" WHERE "Cable rank" = '17';