Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 776 - Pha6-Santinka
Code:CZ06CMSAN
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 6
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 26 35 52 47 85 174 48 42 28 36 61 37 50 31 36 78 64 62 56 64 49 115 55 44 35 44 56 48 22 20 36 52.74 174.30 31.00
2 50 49 37 19 8.94 10 22 25 105 112 46 20 18 26 46 24 13 21 60 25 21 17 16 22 20 62 70 27 ~ ~ ~ 35.57 112.25 28.00
3 18 43 54 96 37 42 28 38 82 79 31 63 48 41 25 29 45 108 64 17 35 38 26 89 137 99 43 26 55 78 88 54.87 137.03 31.00
4 77 70 76 33 40 37 22 26 50 27 22 38 30 36 27 28 19 32 38 65 53 51 65 27 29 47 36 49 59 62 ~ 42.38 76.90 30.00
5 34 26 42 28 31 44 42 37 63 37 22 29 ~ 21 14 30 31 32 41 44 41 24 43 72 37 39 55 54 29 41 23 36.89 71.63 30.00
6 44 54 39 25 23 17 31 31 33 40 26 21 20 26 23 27 25 16 18 20 18 11 23 43 34 24 25 19 40 20 ~ 27.25 53.69 30.00
7 36 29 24 20 13 14 14 17 16 10 18 36 25 14 23 26 32 41 44 32 17 20 24 27 41 25 26 29 32 31 23 25.16 44.34 31.00
8 31 41 62 57 65 33 24 24 50 18 15 32 45 21 13 23 21 28 13 10 11 24 46 57 55 36 32 17 44 57 50 33.95 64.60 31.00
9 18 37 40 28 30 48 40 48 73 67 41 61 67 99 84 63 44 24 37 34 54 81 82 68 53 35 45 68 35 68 ~ 52.41 99.32 30.00
10 21 30 25 39 41 24 38 31 12 16 21 62 139 35 38 20 35 55 55 48 51 50 56 47 76 55 24 46 69 72 38 44.20 139.12 31.00
11 133 105 74 106 156 48 32 46 57 59 62 78 45 23 60 66 51 44 63 46 98 61 52 79 72 195 56 100 68 109 ~ 74.72 194.99 30.00
12 32 24 30 20 13 28 26 47 74 86 44 16 23 39 34 34 39 32 21 31 70 114 107 36 45 37 47 44 38 43 73 43.41 114.42 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- 33 34- 67 68- 100 101- 150 151- 200 201- 300 301- 400 over 400 33 67 100 150 200 300 400
ABS. 31 43 10 5 1 0 0 0 90 59 16 6 1 0 0 0 174
REL. 34.4 47.7 11.1 5.5 1.1 0.0 0.0 0.0 100.0 65.6 17.8 6.7 1.1 0.0 0.0 0.06.1
ID 34 47 11 11 5 0 0 0 110
ABS. 47 39 4 0 0 0 0 0 90 43 4 0 0 0 0 0 77
REL. 52.2 43.3 4.4 0.0 0.0 0.0 0.0 0.0 100.0 47.8 4.4 0.0 0.0 0.0 0.0 0.0 1.4
ID 52 43 4 0 0 0 0 0 100
ABS. 48 34 10 0 0 0 0 0 92 44 10 0 0 0 0 0 99
REL. 52.1 36.9 10.8 0.0 0.0 0.0 0.0 0.0100.0 47.8 10.9 0.0 0.0 0.0 0.0 0.0 14.9
ID 52 36 10 0 0 0 0 0 100
ABS. 24 45 13 8 2 0 0 0 92 68 23 10 2 0 0 0 195
REL 26.0 48.9 14.1 8.6 2.1 0.0 0.0 0.0100.0 73.9 25.0 10.9 2.2 0.0 0.0 0.026.11
ID 26 48 14 17 10 0 0 0 117
Year
ABS. 150 161 37 13 3 0 0 0 364 214 53 16 3 0 0 0 195
REL. 41.2 44.2 10.1 3.5 0.8 0.0 0.0 0.0100.0 58.8 14.6 4.4 0.8 0.0 0.0 0.026.11
ID 41 44 10 7 4 0 0 0 106

Note:

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