Base Offering Circular – Multifamily 90 Weighted Average Coupon Rate ........................................... For any Trust REMIC and any Distribution Date, the per annum rate of interest equal to the average, expressed as a percentage, of the interest rates on some or all of the Trust REMIC’s “qualified mortgages”(as that term is defined in the REMIC Provisions), weighted on the basis of respective current principal balances of such qualified mortgages after giving effect to all payments of principal in the month preceding the Distribution Date.  Such average interest rate may be subject to certain additions, subtractions, multipliers, caps, floors, and governors, as permitted under the REMIC Provisions. Weighted Average Life.............  With respect to any Class, the average amount of time (in years) that will elapse from the date of its issuance until each dollar of principal has been repaid to the investor, determined by (a) multiplying the amount of the net reduction, if any, of the Class Principal Balance (or Class Notional Balance) of such Class from one Distribution Date to the next Distribution Date by the number of years from the Closing Date to such next Distribution Date, (b) summing the results and (c) dividing the sum by the aggregate amount of the net reductions of the Class Principal Balance (or Class Notional Balance) of such Class referred to in clause (a). Weighted Average Loan Age....  With respect to a Series (or, if the Trust MBS are segregated into Trust Asset Groups, the Trust MBS in a designated Trust Asset Group), and for any Distribution Date, the weighted average loan age (in months) of the Mortgage Loans underlying the Trust MBS, weighted on the basis of the respective current principal balances of those Mortgage Loans immediately following the applicable Ginnie Mae Certificate Payment Date in the month preceding the month of that Distribution Date. Weighted Average Mortgage Interest Rate .............................. With respect to designated Ginnie Mae Multifamily Certificates and a Cut-off Date, the per annum rate of interest equal to the average, expressed as a percentage of the Mortgage Rates of all the Mortgage Loans underlying the Ginnie Mae Multifamily Certificates, weighted on the basis of the respective current principal balances of those Mortgage Loans after giving effect to all payments of principal due on or before the Cut-off Date. Weighted Average Original Term to Maturity....................... With respect to designated Ginnie Mae Multifamily Certificates and a Cut-off Date, the average, expressed in months, of the original terms to maturity of all the Mortgage Loans underlying the Ginnie Mae Multifamily Certificates, weighted on the basis of the respective current principal balances of those Mortgage Loans after giving effect to all payments of principal due on or before the Cut-off Date.