step_ahead,prediction
1,200.77832
2,201.12321
3,201.25697
4,201.58316
5,206.77594
6,203.91946
7,202.74484
8,199.94386
9,201.08775
10,202.88226
11,198.5703
12,200.66565
13,204.08173
14,204.46999
15,204.22554
16,203.49702
17,203.69606
18,204.00677
19,205.66313
20,206.5936
21,206.1194
22,206.50363
23,206.77924
24,205.53394
25,206.75446
26,205.3312
27,204.8821
28,204.14064
29,205.15126
30,206.51447