step_ahead,prediction
1,1180.8677
2,1175.0223
3,1177.0612
4,1175.4845
5,1176.4678
6,1177.767
7,1180.8756
8,1180.8514
9,1176.1705
10,1174.4047
11,1180.1301
12,1179.5544
13,1176.5964
14,1178.3027
15,1175.4415