Table 21.

Prediction results of influence range according to wind speed.

ERPG tiers	Wind speed(m/s)	Nitric acid influence range(m)	Nitrogen dioxide influence range(m)	Difference of influence range(m)
ERPG-1	0.5	142	1,940	1798
	1.0	131	1,008	877
	1.5	125	681	556
	2.0	120	510	390
	2.5	117	409	292
	3.0	115	340	225
	3.5	113	294	181
ERPG-2	0.5	43	132	89
	1.0	40	67	27
	1.5	38	45	7
	2.0	37	34	−3
	2.5	36	26	−10
	3.0	35	22	−13
	3.5	35	19	−16
ERPG-3	0.5	15	63	48
	1.0	14	33	19
	1.5	13	22	9
	2.0	13	17	4
	2.5	13	12	−1
	3.0	12	11	−1
	3.5	12	9	−3