Table schema:
CREATE TABLE table_22170495_6 (position_in_e4s_ratings_b VARCHAR, original_airing_on_channel_4 VARCHAR)

Question: What is the position in e4s ratings b when June 30, 2010 is the original airing on channel 4?
SQL: SELECT position_in_e4s_ratings_b FROM table_22170495_6 WHERE original_airing_on_channel_4 = "June 30, 2010"