Consider the following pool of mortgages:

• 100 mortgages with initial balance of $288,899, interest rate 5.3%, issued for 30 years with monthly payments
• 50 mortgages with initial balance of $218,001, interest rate 4.7%, issued for 15 years with monthly payments

What is the Weighted Average Maturity for this pool at origination? Express your answer in months rounded to 2 decimal points (e.g. if your answer is 5.6744 months, write 5.67).