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 station ( bikes_available INTEGER, station_id VARCHAR, id VARCHAR, city VARCHAR )
TABLE: CREATE TABLE status ( bikes_available INTEGER, station_id VARCHAR, id VARCHAR, city VARCHAR )

### Question ###
What is the average bike availability in stations that are not located in Palo Alto?

### Accurate SQL ###

SELECT AVG(bikes_available) FROM status WHERE NOT station_id IN (SELECT id FROM station WHERE city = "Palo Alto")