step_ahead,prediction
1,19.099732756614685
2,16.204964864254
3,15.35739607810974
4,17.032370698452
5,14.51577868461609
6,13.525781010091304
7,12.649026003479957
8,13.721914115548135
9,17.8474892616272
10,14.33794520497322
11,16.073824548721316
12,17.521279859542847
13,13.77492153942585
14,13.669492253661156
15,13.601669983565808
16,16.999239838123323
17,13.245320934057236
18,15.186385941505431
19,20.47991887331009
20,13.771280896663665
21,15.574269735813141
22,15.07754277586937
23,15.308090782165527
24,15.081511533260345
25,12.418925188481808
26,16.38866465687752
27,22.013901138305666
28,11.245614299178124
29,14.752472883462906
30,15.859796643257143