Observed value

Forecast y

Residual

238.5

238.5657

−0.06574

231.7

231.5996

0.100376

226.3

226.2581

0.041882

222.3

222.3203

−0.02034

219.7

219.9023

−0.2023

218.5

218.3242

0.175755

218.7

218.8018

−0.10176

220.3

220.2416

0.058361

223.3

223.0585

0.241507

227.7

227.9544

−0.25439

233.5

233.4965

0.003489

241.6

241.7613

−0.16135

251.1

250.8081

0.291866

259.6

259.7074

−0.10736