Air Pollution and the Public Perception Level and Self-Protection Demand in Three Cities of China: Fractional Grey Modelling Analysis

Table 1

The RMSPEPR and RMSPEPO of four models.

	GMCT (1, 2)	GMCG (1, 2)	RDGM (1, 2)	FNGMC (1, 2)
RMSPEPR (%)	0.41	0.25	0.1	0.09
RMSPEPO (%)	2.92	2.84	2.86	1.72