step_ahead,prediction
1,33.67129
2,33.929806
3,33.68327
4,33.662685
5,33.986515
6,33.916897
7,34.15003
8,33.994164
9,34.002335
10,33.52631
11,33.5842
12,33.69986
13,33.8273
14,33.514072
15,33.27258