step_ahead,prediction
1,222.5292
2,222.17754
3,222.42273
4,222.11008
5,222.53511
6,222.69926
7,222.80655
8,222.07843
9,222.91035
10,222.81499
11,221.84718
12,222.54733
13,222.11877
14,222.5239
15,222.17255
16,221.953
17,222.26222
18,222.41632
19,221.35764
20,222.44548
21,221.57625
22,221.92305
23,221.72287
24,222.50613
25,221.6535
26,221.81183
27,222.13374
28,222.5828
29,221.27681
30,221.84663