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_20726262_4 ( no_in_season INTEGER, usviewers__million_ VARCHAR )

### Question ###
what is the maximum number in the season wher the us viewers is 2.59?

### Accurate SQL ###

SELECT MAX(no_in_season) FROM table_20726262_4 WHERE usviewers__million_ = "2.59"