user: Question: What was the average Jersey number of the player for the calgary flames, whose Weight (kg) was greater than 84?
Columns: ['Position', 'Jersey number', 'Name v t e', 'Height (cm)', 'Weight (kg)', 'Birthplace', '1995-96 team']
Types: ['text', 'real', 'text', 'real', 'real', 'text', 'text']
Sample row: ['G', 30.0, 'Jim Carey Category:Articles with hCards', 188.0, 86.0, 'Dorchester, Massachusetts', 'Washington Capitals']
SQL:

assistant: SELECT AVG("Jersey number") FROM "Table" WHERE "1995-96 team" = 'calgary flames' AND "Weight (kg)" > 84.0;