Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 805 - Pha10-Vrsovice
Code:CZ10CMVRS
Institution:CHMI
Region:Hlavni mesto Praha
District:Praha 10
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 67 94 27 30 44 52 81 46 63 223 135 99 86 151 238 133 47 99 81 68 36 58 50 68 85 275 261 134 167 94 52 101.42 274.94 31.00
2 90 121 91 218 218 154 78 62 136 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 173 148 109 94 117 143 125 63 40 ~ ~ ~ 121.10 217.82 18.00
3 41 55 60 56 39 52 32 29 43 81 100 81 40 33 71 71 63 69 39 34 26 45 86 51 106 125 90 81 73 131 115 65.20 130.98 31.00
4 117 90 89 40 59 82 ~ 62 85 54 67 24 50 55 82 97 61 37 43 66 91 73 74 52 39 37 44 59 58 57 ~ 63.50 117.34 29.00
5 41 43 48 43 ~ 85 93 51 49 75 86 111 58 56 54 35 46 54 40 42 52 34 34 41 52 57 77 59 52 48 74 56.34 111.13 30.00
6 70 72 72 58 60 38 44 84 74 56 64 32 ~ 48 ~ ~ ~ 69 68 53 64 63 65 73 72 54 56 63 71 62 ~ 61.65 84.15 26.00
7 62 63 58 45 44 51 77 54 58 54 40 52 59 69 69 68 57 45 63 93 72 100 92 90 63 72 77 85 78 71 74 66.27 99.56 31.00
8 50 35 68 56 52 68 69 54 48 75 74 69 71 60 55 49 76 61 54 79 61 45 51 62 67 72 55 58 47 51 84 60.47 84.18 31.00
9 115 89 79 81 64 80 111 108 79 81 131 77 72 57 77 94 88 68 79 93 87 126 114 135 141 102 132 118 123 98 ~ 96.62 141.29 30.00
10 76 ~ ~ ~ ~ 64 102 118 122 55 62 96 73 92 128 169 75 86 123 88 111 141 121 95 74 75 52 47 76 52 41 89.41 169.24 27.00
11 33 92 ~ ~ 68 74 126 102 141 147 70 119 126 77 68 108 82 94 110 53 51 97 209 211 126 159 178 174 98 104 ~ 110.60 210.71 28.00
12 77 108 134 112 66 51 65 80 164 200 196 181 45 124 213 88 250 227 60 79 118 138 161 103 59 42 44 87 127 98 45 114.25 249.84 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. 6 25 24 15 4 6 0 0 80 74 49 25 10 6 0 0 275
REL. 7.5 31.2 30.0 18.7 5.0 7.5 0.0 0.0 100.0 92.5 61.3 31.3 12.5 7.5 0.0 0.026.1
ID 7 31 30 37 25 187 0 0 318
ABS. 2 55 26 2 0 0 0 0 85 83 28 2 0 0 0 0 117
REL. 2.3 64.7 30.5 2.3 0.0 0.0 0.0 0.0 100.0 97.6 32.9 2.4 0.0 0.0 0.0 0.0 1.4
ID 2 64 30 4 0 0 0 0 102
ABS. 0 37 43 12 0 0 0 0 92 92 55 12 0 0 0 0 141
REL. 0.0 40.2 46.7 13.0 0.0 0.0 0.0 0.0100.0 100.0 59.8 13.0 0.0 0.0 0.0 0.0 25.9
ID 0 40 46 26 0 0 0 0 113
ABS. 0 19 27 26 8 6 0 0 86 86 67 40 14 6 0 0 250
REL 0.0 22.0 31.3 30.2 9.3 6.9 0.0 0.0100.0 100.0 77.9 46.5 16.3 7.0 0.0 0.017.12
ID 0 22 31 60 46 174 0 0 334
Year
ABS. 8 136 120 55 12 12 0 0 343 335 199 79 24 12 0 0 275
REL. 2.3 39.6 34.9 16.0 3.4 3.4 0.0 0.0100.0 97.7 58.0 23.0 7.0 3.5 0.0 0.0 26.1
ID 2 39 34 32 17 87 0 0 213

Note:

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