step_ahead,prediction
1,14.121644
2,14.403332
3,14.51594
4,14.84966
5,13.870608
6,13.349224
7,14.276577
8,13.75221
9,14.166493
10,14.648097
11,15.154206
12,14.458702
13,13.544607
14,13.677539
15,14.010598