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_23370 ( "N\u00ba" real, "Ep" real, "Huckleberry Hound" text, "Pixie and Dixie" text, "Yogi Bear" text, "Air date" text, "Credited animators" text )

### Question ###
What is the Yogi Bear that aired on 1959.12.21?

### Accurate SQL ###

SELECT "Yogi Bear" FROM table_23370 WHERE "Air date" = '1959.12.21'