step_ahead,prediction
1,13.612754
2,13.813379
3,13.821382
4,14.02099
5,13.958803
6,13.908464
7,14.118064
8,14.078604
9,13.677328
10,14.0095
11,13.967227
12,14.057209
13,14.177817
14,14.39464
15,14.434937