Consider the following pool of mortgages:

• 100 mortgages with initial balance of $109,871, interest rate 3.3%, issued for 30 years with monthly payments
• 50 mortgages with initial balance of $255,193, interest rate 2.5%, issued for 15 years with monthly payments

What is the Weighted Average Coupon for this pool at origination? Express your answer as a number rounded to 4 decimal points (e.g. if your answer is 5.112%, write 0.0511).