CHMU - Tabular overview of air quality of the Czech Republic

Year:					1998
Pollutant:					NOx-nitrogen oxides(oxides of nitrogen)
Station:					548 - Usti n.L.-Brna
Code:					CZULHSUBR
Institution:					Public Health Service
Region:					Severocesky
District:					Usti nad Labem
IHd:					100
Measure method:					trithanolamine spectophotometry
Unit:					ug/m^3

Average daily concentrations
Day/ Month	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	X	Max	N
1	~	57	29	29	38	17	33	28	45	57	39	74	65	71	60	61	36	25	38	40	35	26	37	33	46	86	134	69	42	38	23	47.03	134.00	30.00
2	20	74	33	40	62	109	41	19	55	35	56	29	38	36	35	40	34	50	30	37	36	44	18	21	38	43	39	18	~	~	~	40.36	109.00	28.00
3	13	20	15	24	20	19	15	8.00	~	~	~	~	~	~	~	~	~	~	~	~	~	~	~	~	~	~	~	~	~	~	~	16.75	24.00	8.00
4	~	~	~	~	~	~	~	~	~	~	~	~	~	25	24	32	16	41	28	31	43	40	31	27	23	18	22	27	22	89	~	31.71	89.00	17.00
5	8.00	17	12	21	28	22	24	18	30	18	19	25	21	23	29	24	16	~	~	~	~	~	~	~	~	~	~	~	~	~	~	20.88	30.00	17.00
Quarterly and annual absolute and relative frequency of average daily concentrations partial and total air pollution indexes according to classes of IHd multiples
Quarter	concentration classes in IHd multiples																total ind.		part of it in IHd multiples														max. date
	<=1/3		<=2/3		<=1.0		<=1.5		<=2.0		<=3.0		<=4.0		>		total ind.		1/3		2/3		1.0		1.5		2.0		3.0		4.0
	concentration classes in measurement units																		part of above IHd multiples in meas. units
	0- 33		34- 67		68- 100		101- 150		151- 200		201- 300		301- 400		over 400				33		67		100		150		200		300		400
ABS.	25		34		5		2		0		0		0		0		66		41		7		2		0		0		0		0		134
REL.	37.8		51.5		7.5		3.0		0.0		0.0		0.0		0.0		100.0		62.1		10.6		3.0		0.0		0.0		0.0		0.0		27.1
ID	37		51		7		6		0		0		0		0		103
ABS.	30		3		1		0		0		0		0		0		34¹		4		1		0		0		0		0		0		89
REL.	88.2		8.8		2.9		0.0		0.0		0.0		0.0		0.0		100.0		11.8		2.9		0.0		0.0		0.0		0.0		0.0		30.4
ID	88		8		2		0		0		0		0		0		100
ABS.	0		0		0		0		0		0		0		0		0²		0		0		0		0		0		0		0		0
ABS.	0		0		0		0		0		0		0		0		0²		0		0		0		0		0		0		0		0
Year
ABS.	55		37		6		2		0		0		0		0		100²		45		8		2		0		0		0		0		134
REL.	55.0		37.0		6.0		2.0		0.0		0.0		0.0		0.0		100.0		45.0		8.0		2.0		0.0		0.0		0.0		0.0		27.1
ID	55		37		6		4		0		0		0		0		102
Note:				¹ frequency < 60 per quarter, or < 240 per annum
Note:				² frequency < 30 per quarter, or < 120 per annum