    Sentence 1: The 30-year bond < US30YT =  RR > firmed 24 / 32 , taking its yield to 4.18  percent , after hitting another record low of  4.16 percent .    Sentence 2: The 30-year bond US30YT = RR  firmed 14 / 32 , taking its yield to 4.19  percent from 4.22 percent .