注意表格下方有句话，This spread implicily include a maturity premium in relation to the one year T notes as well as compensation forprepayment risk.是对10-year MBS prepayment risk spread的注释，意思是该项risk premium中包含了对于期限的补偿和对提前偿还风险的补偿，所以不需再加maturity premium的1% 。
因为有这个特别注释，所以和老师说的也并非矛盾。
