step_ahead,prediction
1,80.39857546515455
2,76.46911002941978
3,80.6360564035201
4,79.42335021152383
5,78.91905190219677
6,79.18005572886804
7,76.88551846813438
8,74.7150063290968
9,76.71222537131241
10,78.27427311250031
11,76.7985797496692
12,76.51438145942467
13,76.50054923335477
14,78.37697621812379
15,76.32190750517553
16,75.57025845448393
17,76.78089173193504
18,75.16821539887245
19,74.98576053159161
20,75.79719141410423
21,74.30591707013426
22,74.07503021795559
23,75.14546878720711
24,75.67078627941187
25,73.66579167502375
26,73.93769749671033
27,73.2985104579783
28,72.02527601431447
29,71.35880413125032
30,73.28275886658881