Arima Example Input Table milk_timeseries id period milkpound 1 1962-01 578.3 2 1962-02 609.8 3 1962-03 628.4 4 1962-04 665.6 5 1962-05 713.8 6 1962-06 707.2 7 1962-07 628.4 8 1962-08 588.1 9 1962-09 576.3 10 1962-10 566.5 ... ... ...