step_ahead,prediction
1,137.34926
2,137.06015
3,137.82317
4,136.29158
5,137.04033
6,135.02454
7,136.86545
8,136.69626
9,136.48267
10,132.82535
11,131.33116
12,135.54407
13,133.62051
14,134.05331
15,134.86606