step_ahead,prediction
1,200.0613
2,200.13744
3,198.57385
4,192.30681
5,199.62746
6,189.9699
7,192.9868
8,191.77643
9,191.56004
10,183.04643
11,189.29185
12,184.99069
13,189.66064
14,186.71115
15,193.88542
16,176.72882
17,189.74324
18,182.0753
19,188.30669
20,181.89668
21,179.41275
22,178.30096
23,178.83618
24,177.9452
25,182.79361
26,172.38863
27,171.28172
28,183.75888
29,179.43463
30,180.56734