		Group 1	Group 2	Group 3	Group 4
Stable R²	AR	0.7213	0.7832	0.8102	0.8123
Stable R²	NAR	0.9104	0.9012	0.9874	0.9976
Error rate	AR	0.0918	0.0726	0.1912	0.1147
Error rate	NAR	0.0318	0.0245	0.0272	0.0218
Prediction accuracy	AR	General	General	Good	Good
Prediction accuracy	NAR	Good	Good	Good	Good