step_ahead,prediction
1,7.6088924
2,7.643867
3,7.6184034
4,7.680037
5,7.6907654
6,7.6917715
7,7.659083
8,7.672897
9,7.708183
10,7.69847
11,7.7958183
12,7.682684
13,7.7502546
14,7.762144
15,7.728016