step_ahead,prediction
1,20.676015108823776
2,20.225603818893433
3,20.26919776201248
4,20.478391289711
5,20.412872970104218
6,20.08433187007904
7,19.954947471618652
8,20.376397609710693
9,20.374305486679077
10,20.103026866912842
11,20.05889916419983
12,19.922039449214935
13,19.917774736881256
14,19.964956134557724
15,20.081814616918564
16,19.851170122623444
17,19.87184190750122
18,19.808527022600174
19,19.575913786888123
20,19.674321353435516
21,19.892206579446793
22,19.80485239624977
23,19.45578971505165
24,19.445656329393387
25,19.538494288921356
26,19.51890879869461
27,19.338717997074127
28,19.33500850200653
29,19.479676127433777
30,19.297183990478516