user: ### NOW ANSWER:
Question: What is the highest effic with an avg/g of 91.9?
Columns: ['Name', 'GP-GS', 'Effic', 'Att-Cmp-Int', 'Avg/G']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Robert Marve', '11-11', 107.19, '213-116-13', 117.5]
SQL:

assistant: SELECT MAX("Effic") FROM "Table" WHERE "Avg/G" = 91.9;