step_ahead,prediction
1,37.08155791163445
2,35.50258347988129
3,35.677918350696565
4,35.228321778774266
5,34.35131443142891
6,31.761737576127054
7,33.25417742133141
8,34.965117949247364
9,35.22664913535119
10,33.83431215286255
11,35.12334828972817
12,35.91154047846794
13,33.82363717556
14,33.445413440465934
15,34.90380976200104