? P&R Exercise 16.1

options crt limwarn=0;

freq m;
smpl 50:1 96:3;
read(file='\tsp\prhb\datadisk\ex161.xls', format=excel) fygn3;
r=fygn3;
smpl 60:1 96:3;
bjident(nlag=24, ndiff=2, noplot) r;