step_ahead,prediction
1,193.12892
2,193.08664
3,192.68254
4,192.49283
5,192.56262
6,192.98106
7,193.40575
8,193.66045
9,193.56544
10,193.03615
11,192.66776
12,191.28426
13,192.28467
14,193.80705
15,193.08606