ECTGt1 of equation (5) and ECTFt1 of equation (6) are the error correction terms.
Since they are not observable, ECTGt1 is replaced by EGt1GDPPt129596.3
23038OFDIt1 and ECTFt1 is replaced by EFt1OFDIt10.39450.2510
104
GDPPt1. The selected value of n for each equation is the lowest value of n