usg report at 5 weeks 6 days shows crown rump length 0.24~5 weeks 5 days, fetal pole present, cardiac pulse present, abnormalities of conceptus- nil, single intra uterine gestation sac seen. parameters on usg report- fr=8.0 MHz, Qn=82, E/A=1/0, D=7.0cm, DR=80, FR=24Hz, AO=100%. What could be the heart beat as per usg report?