user: Question: In los banos, california, when the ERP W is than 10, what is the average Frequency MHz?
Columns: ['Call sign', 'Frequency MHz', 'City of license', 'ERP W', 'Class', 'FCC info']
Types: ['text', 'real', 'text', 'real', 'text', 'text']
Sample row: ['K217EZ', 91.3, 'Coachella, California', 10.0, 'D', 'FCC']
SQL:

assistant: SELECT AVG("Frequency MHz") FROM "Table" WHERE "City of license" = 'los banos, california' AND "ERP W" < 10.0;