Prediction of Air Quality Based on Hybrid Grey Double Exponential Smoothing Model

Table 4

The forecasting results of PM₁₀ concentration.

Date	CFES	AAES	Hybrid model	ES
Parameter
1-Dec	46	46	46	46
2-Dec	75.00	74.56	74.76	75.00
3-Dec	108.51	87.18	96.90	93.25
4-Dec	129.48	105.00	116.15	115.00
5-Dec	109.94	93.05	100.74	100.94
6-Dec	92.84	84.00	88.03	90.19
7-Dec	84.00	80.93	82.33	85.95
8-Dec	116.88	114.41	115.53	121.41
9-Dec	142.03	141.09	141.52	147.17
10-Dec	145.09	147.28	146.28	150.32
MAPE	9.72%	2.65%	5.87%	5.90%
11-Dec	135.48	154.40	145.78	161.09
12-Dec	140.90	162.00	152.39	171.87
13-Dec	146.08	169.84	159.02	182.64
MAPE	4.82%	9.52%	2.99%	16.08%