What is the position in e4s ratings b when June 30, 2010 is the original airing on channel 4?
create table table_22170495_6 (position_in_e4s_ratings_b varchar, original_airing_on_channel_4 varchar, PRIMARY KEY (position_in_e4s_ratings_b))
select position_in_e4s_ratings_b from table_22170495_6 where original_airing_on_channel_4 = "june 30, 2010"