Prediction of China’s Sulfur Dioxide Emissions by Discrete Grey Model with Fractional Order Generation Operators

Table 6

Model testing result of China’s sulfur dioxide emissions (unit: million tons).

	Year				Fractional Order
						(%)		(%)		(%)		(%)
			8	2014	19.744	20.240	2.512	20.237	2.497	20.369	3.166	19.642	0.517
9	2015	18.591	19.413	4.405	19.807	6.541	19.686	5.890	18.848	1.382