step_ahead,prediction
1,16.323309
2,17.560467
3,17.858372
4,17.544094
5,17.597822
6,17.713154
7,17.445375
8,18.56638
9,17.112276
10,18.922445
11,17.763735
12,18.18959
13,17.939823
14,19.13088
15,18.212414
16,19.072737
17,18.42906
18,17.904224
19,17.939398
20,18.470072
21,18.749342
22,19.476477
23,19.05039
24,18.664904
25,19.00132
26,18.773397
27,19.017557
28,18.398045
29,18.941147
30,18.731527