Table 2.

Comparison of model performance in ozone prediction across three simulations (monthly average of daily 1 h maxima).

Low PM2.5 (< 60 μg m−3)							High PM2.5 (< 60 μgm−3)
	Region	OBS (μgm−3)	Normalized mean bias			∆-ADE* (μgm−3)	OBS (μgm−3)	Normalized mean bias			∆-ADE (μgm−3)
			SimSF	SimNF	SimBL			SimSF	SimNF	SimBL
January	JJJ	62.52	3%	4%	5%	−1.05	37.02	22 %	36%	53 %	−11.36
	YRD	63.89	38%	41 %	43 %	−2.76	66.74	54%	59 %	67%	−8.85
	PRD	97.25	25 %	26 %	29 %	−4.52	122.61	6%	5%	9%	−4.63
	HUZ	47.67	172%	173%	193%	−10.17	67.29	107%	125%	142 %	−23.9
	SCH	88.63	−43%	−40%	−38%	−3.85	111.19	−5%	2%	8%	−13.78
	China	76.61	30%	31 %	34%	−2.96	62.68	42%	48 %	56%	−8.61
July	JJJ	159.27	−29%	−28%	−28%	−0.51	178.54	−25%	−25%	−25%	1.02
	YRD	171.04	−31 %	−31 %	−32%	0.84	233.13	−24%	−25%	−23%	−0.51
	PRD	129.02	−20%	−19%	−20%	−0.09	312.21	−44%	−45%	−46%	4.92
	HUZ	187.44	−36%	−37%	−37%	1.39	208.99	−27%	−28%	−29%	4.19
	SCH	163.81	−38%	−38%	−39%	0.77	191.19	−30%	−31 %	−31 %	1.18
	China	145.24	−28%	−28%	−28%	0.3	181.65	−25%	−25%	−25%	0.9

^*∆-ADE represents the O₃ response to ADEs, which is calculated from the difference between SimSF and SimBL.