step_ahead,prediction 1,804.7475 2,805.78326 3,785.2329 4,798.4451 5,801.3662 6,791.5637 7,786.9471 8,804.8934 9,795.0936 10,767.9659 11,756.0901 12,766.57227 13,772.1539 14,765.60925 15,769.5222 16,751.2011 17,782.265 18,752.5828 19,743.8236 20,771.01337 21,758.12067 22,701.3625 23,745.1968 24,733.94714 25,743.3478 26,737.1646 27,725.594 28,730.9964 29,736.4285 30,766.4357