Table 5. 95% Forecast limits for predicted future values for model in Eq. (7) and model in Eq. (15)
Lead time (months) | 95% forecast limits for the model in Eq. (7) | 95% forecast limits for the model in Eq. (15) | ||||||
|---|---|---|---|---|---|---|---|---|
Lower limit | Predicted value | Upper limit | Length of interval | Lower limit | Predicted value | Upper limit | Length of interval | |
Jan 2018 | 27,145.07 | 28,912.17 | 30,734.98 | 3589.91 | 27,338.53 | 28,888.65 | 30,438.78 | 3100.25 |
Feb 2018 | 27,477.24 | 30,007.37 | 32,648.92 | 5171.68 | 27,746.25 | 29,938.32 | 32,130.39 | 4384.14 |
Mar 2018 | 26,930.74 | 30,014.46 | 33,265.29 | 6334.55 | 27,219.42 | 29,904.09 | 32,588.76 | 5369.34 |
Apr 2018 | 26,112.55 | 29,635.16 | 33,380.58 | 7268.03 | 26,429.93 | 29,529.89 | 32,629.85 | 6199.92 |
May 2018 | 25,599.67 | 29,515.09 | 33,709.02 | 8109.35 | 25,895.32 | 29,361.16 | 32,826.99 | 6931.67 |
June 2018 | 25,507.25 | 29,803.44 | 34,433.83 | 8926.58 | 25,851.27 | 29,647.88 | 33,444.50 | 7593.23 |
July 2018 | 25,463.04 | 30,114.03 | 35,154.92 | 9691.88 | 25,836.55 | 29,937.36 | 34,038.16 | 8201.61 |
Aug 2018 | 26,104.41 | 31,150.51 | 36,642.22 | 10,537.81 | 26,551.46 | 30,935.40 | 35,319.33 | 8767.87 |
Sept 2018 | 26,129.74 | 31,498.75 | 37,369.05 | 11,239.31 | 26,586.57 | 31,236.43 | 35,886.28 | 9299.71 |
Oct 2018 | 25,364.85 | 30,959.01 | 37,110.16 | 11,745.31 | 25,761.54 | 30,662.91 | 35,564.28 | 9802.74 |
Nov 2018 | 25,322.34 | 31,199.12 | 37,688.58 | 12,366.24 | 25,697.59 | 30,838.18 | 35,978.78 | 10,281.19 |
Dec 2018 | 24,597.68 | 30,666.13 | 37,402.98 | 12,805.3 | 24,883.07 | 30,252.24 | 35,621.41 | 10,738.34 |
Jan 2019 | 24,435.55 | 30,892.56 | 38,105.71 | 13,670.16 | 24,734.05 | 30,453.99 | 36,173.94 | 11,439.89 |