Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_41 (episode_number INTEGER, air_date VARCHAR)

### Question ###
What kind of Episode Number has a Air Date on 29 june 2007?

### Accurate SQL ###

SELECT AVG(episode_number) FROM table_name_41 WHERE air_date = "29 june 2007"