Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NO-nitrogen monoxide
Station: 771 - Pha1-nam. Republiky
Code:CZ01CMREP
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 1
IHd: 150
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 8.50 12 21 18 41 84 18 21 16 10 25 24 67 48 13 23 28 31 23 26 28 102 27 16 20 23 33 25 17 12 22 28.44 101.85 31.00
2 40 69 53 25 22 19 14 45 65 68 36 21 14 17 34 20 17 26 43 32 13 19 21 20 19 42 22 12 ~ ~ ~ 30.40 69.29 28.00
3 11 29 50 85 29 23 23 23 31 33 16 43 23 20 20 16 26 56 26 13 8.64 16 14 50 83 45 10 7.64 24 44 50 30.60 85.31 31.00
4 42 31 31 10 10 16 15 13 19 12 11 15 16 11 14 20 29 18 20 21 22 29 33 15 11 30 23 28 29 40 ~ 21.15 42.06 30.00
5 13 13 21 8.64 12 14 14 16 24 17 12 14 16 19 10 22 12 15 22 15 19 13 12 26 19 18 19 ~ 11 10 11 15.63 26.07 30.00
6 10 17 16 13 17 8.53 13 13 20 12 14 13 7.73 13 12 15 12 12 12 5.08 12 10 21 29 15 11 13 14 20 17 ~ 13.95 28.58 30.00
7 21 20 12 4.81 5.46 6.61 12 14 19 8.11 6.03 16 12 13 19 15 16 13 12 12 11 14 17 12 31 14 14 13 15 20 11 13.79 31.08 31.00
8 19 17 36 23 21 16 11 10 17 13 14 20 22 10 10 13 13 18 11 11 12 21 30 60 19 10 13 11 34 20 23 18.66 59.60 31.00
9 18 26 24 10 8.17 15 24 31 38 37 13 51 28 63 25 20 9 7.40 7.42 6.15 18 24 22 20 16 12 13 23 17 32 ~ 21.89 63.33 30.00
10 15 21 12 20 30 22 25 18 8.93 13 16 32 64 27 27 16 24 24 20 17 14 15 24 16 43 27 18 42 52 39 15 24.33 63.57 31.00
11 52 61 51 49 54 19 17 29 46 40 47 45 29 18 50 35 33 30 45 25 60 41 34 52 52 107 29 54 27 36 ~ 42.25 106.93 30.00
12 11 13 14 9 10 13 8.36 15 20 23 13 10 10 14 19 21 18 19 16 19 28 33 31 10 19 10 26 27 30 27 29 18.32 32.82 31.00

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 > 1/32/31.01.52.0 3.04.0

concentration classes in measurement units

part of above IHd multiples in meas. units

0- 50 51- 100 101- 150 151- 225 226- 300 301- 450 451- 600 over 600 50 100 150 225 300 450 600
ABS. 77 12 1 0 0 0 0 0 90 13 1 0 0 0 0 0 102
REL. 85.5 13.3 1.1 0.0 0.0 0.0 0.0 0.0 100.0 14.4 1.1 0.0 0.0 0.0 0.0 0.022.1
ID 85 13 1 0 0 0 0 0 100
ABS. 90 0 0 0 0 0 0 0 90 0 0 0 0 0 0 0 42
REL.100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 100 0 0 0 0 0 0 0 100
ABS. 89 3 0 0 0 0 0 0 92 3 0 0 0 0 0 0 63
REL. 96.7 3.2 0.0 0.0 0.0 0.0 0.0 0.0100.0 3.3 0.0 0.0 0.0 0.0 0.0 0.0 14.9
ID 96 3 0 0 0 0 0 0 100
ABS. 80 11 1 0 0 0 0 0 92 12 1 0 0 0 0 0 107
REL 86.9 11.9 1.0 0.0 0.0 0.0 0.0 0.0100.0 13.0 1.1 0.0 0.0 0.0 0.0 0.026.11
ID 86 11 1 0 0 0 0 0 100
Year
ABS. 336 26 2 0 0 0 0 0 364 28 2 0 0 0 0 0 107
REL. 92.3 7.1 0.5 0.0 0.0 0.0 0.0 0.0100.0 7.7 0.5 0.0 0.0 0.0 0.0 0.026.11
ID 92 7 0 0 0 0 0 100

Note:

1 frequency < 60 per quarter, or < 240 per annum
2 frequency < 30 per quarter, or < 120 per annum