Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 457 - Pha10-Srobarova
Code:CZ10HSSRO
Institution:Public Health Service
Region:Hlavni mesto Praha
District:Praha 10
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ 69 ~ ~ 41 55 56 51 54 ~ ~ 231 201 131 108 159 ~ ~ 55 52 40 55 55 ~ ~ 208 186 129 113 68 ~ 100.81 231.00 21.00
2 ~ 65 102 131 135 121 ~ ~ 112 122 77 62 65 ~ ~ 46 59 82 86 78 ~ ~ 82 63 106 95 41 ~ ~ ~ ~ 86.50 135.00 20.00
3 ~ ~ 47 52 47 47 ~ ~ 29 24 76 49 57 ~ ~ 66 57 69 46 66 ~ ~ 58 65 82 73 72 ~ ~ 86 103 60.52 103.00 21.00
4 124 87 68 ~ ~ 94 58 89 53 49 ~ ~ ~ 77 44 114 42 ~ ~ 64 95 109 ~ 65 ~ ~ 36 23 43 ~ ~ 70.21 124.00 19.00
5 ~ ~ ~ 53 63 57 171 ~ ~ ~ 62 111 39 42 47 ~ ~ 48 57 68 52 77 ~ ~ 53 59 50 66 48 ~ ~ 64.37 171.00 19.00
6 81 49 79 63 51 ~ ~ 68 65 45 52 50 ~ ~ 52 40 69 51 58 ~ ~ 44 20 23 17 34 ~ ~ 56 40 ~ 50.32 81.00 22.00
7 54 66 ~ ~ ~ ~ 53 30 36 48 ~ ~ 28 38 38 36 ~ ~ ~ 49 45 48 53 46 ~ ~ 55 37 29 19 48 42.80 66.00 20.00
8 ~ ~ 39 30 52 48 73 ~ ~ 72 79 96 59 58 ~ ~ 68 46 71 52 34 ~ ~ 34 37 39 34 31 ~ ~ 57 52.81 96.00 21.00
9 ~ 18 23 12 ~ ~ 10 22 42 48 75 ~ ~ 43 39 56 47 68 ~ ~ 77 79 55 76 108 ~ ~ 71 111 59 ~ 54.24 111.00 21.00
10 35 46 ~ ~ 58 73 76 107 ~ ~ ~ 94 123 88 127 141 ~ ~ 107 119 96 90 81 ~ ~ 47 24 ~ 20 16 ~ 78.40 141.00 20.00
11 ~ 41 34 51 39 ~ ~ ~ 80 97 64 56 65 ~ ~ 123 102 113 137 108 ~ ~ 290 289 103 171 ~ ~ ~ 128 ~ 110.05 290.00 19.00
12 56 179 104 ~ ~ ~ 216 129 238 282 210 ~ ~ 162 251 131 256 240 ~ ~ 139 178 ~ ~ ~ ~ ~ 109 141 72 ~ 171.83 282.00 18.00

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. 2 29 14 12 2 3 0 0 62 60 31 17 5 3 0 0 231
REL. 3.2 46.7 22.5 19.3 3.2 4.8 0.0 0.0 100.0 96.8 50.0 27.4 8.1 4.8 0.0 0.012.1
ID 3 46 22 38 16 120 0 0 248
ABS. 4 39 12 4 1 0 0 0 60 56 17 5 1 0 0 0 171
REL. 6.6 65.0 20.0 6.6 1.6 0.0 0.0 0.0 100.0 93.3 28.3 8.3 1.7 0.0 0.0 0.0 7.5
ID 6 65 20 13 8 0 0 0 113
ABS. 11 37 12 2 0 0 0 0 62 51 14 2 0 0 0 0 111
REL. 17.7 59.6 19.3 3.2 0.0 0.0 0.0 0.0100.0 82.3 22.6 3.2 0.0 0.0 0.0 0.0 29.9
ID 17 59 19 6 0 0 0 0 103
ABS. 3 12 10 19 4 9 0 0 571 54 42 32 13 9 0 0 290
REL 5.2 21.0 17.5 33.3 7.0 15.7 0.0 0.0100.0 94.7 73.7 56.1 22.8 15.8 0.0 0.023.11
ID 5 21 17 66 35 394 0 0 540
Year
ABS. 20 117 48 37 7 12 0 0 241 221 104 56 19 12 0 0 290
REL. 8.2 48.5 19.9 15.3 2.9 4.9 0.0 0.0100.0 91.7 43.2 23.2 7.9 5.0 0.0 0.023.11
ID 8 48 19 30 14 124 0 0 246

Note:

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