step_ahead,prediction
1,6.4635825
2,6.540308
3,6.5703726
4,6.5396094
5,6.495995
6,6.554332
7,6.591571
8,6.5113783
9,6.5691724
10,6.4889083
11,6.4750247
12,6.5360603
13,6.5072746
14,6.529338
15,6.5339646
16,6.5153375
17,6.5687184
18,6.5721827
19,6.52892
20,6.6048317
21,6.5193667
22,6.52436
23,6.5798116
24,6.5351787
25,6.5400486
26,6.5362277
27,6.60744
28,6.5379395
29,6.490293
30,6.51324