Semantic Smart World Framework

Table 4

The air quality index.

Band	Index	Nitrogen dioxide 1-hour mean (µg m^−3)		Ozone 8-hourly mean (µg m^−3)		PM10 particles 24-hour mean (µg m^−3)		PM2.5 particles 24-hour mean (µg m^−3)		Sulphur dioxide 15-minute mean (µg m^−3)
		Min	Max	Min	Max	Min	Max	Min	Max	Min	Max
Low	1	0	67	0	33	0	16	0	11	0	88
	2	68	134	34	66	17	33	12	23	89	177
	3	135	200	67	100	34	50	24	35	178	266
Moderate	4	201	267	101	120	51	58	36	41	267	354
	5	268	334	121	140	59	66	42	47	355	443
	6	335	400	141	160	67	75	48	53	444	532
High	7	401	467	161	187	76	83	54	58	533	710
	8	468	534	188	213	84	91	59	64	711	887
	9	535	600	214	240	92	100	65	70	888	1064
Very high	10	601		241		101		71		1065