Limit values for the Czech Republic | ||||||
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Pollutant | Expressed as | Limit values [µg.m-3] | ||||
IHr | IHd | IH8h | IHk | General requirement** | ||
Suspended particulate matter | SPM | 60 | 150 | 500 | IHd and IHk must not be exceeded in more than 5% of measurements annually. | |
Sulphur dioxide | SO2 | 60 | 150 | 500 | ||
Sulphur dioxide and suspended particulate matter | SO2 + SPM | 250* | ||||
Nitrogen oxides | NO2 | 80 | 100 | 200 | IHd and IHk must not be exceeded in more than 5% of measurements annually. | |
Carbon monoxide | CO | 5000 | 10 000 | |||
Ozone | O3 | 160 | ||||
Lead in suspended particulate matter | Pb | 0.5 | ||||
Cadmium in suspended particulate matter | Cd | 0.01 |
Legends | |||||||||||
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* ** IHr IHd IH8hIHk |
Limit values for health protection | ||||
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Pollutant | Averaging Interval | Limit value | Margin of tolerance 1) (for the year 2001) | Maximum tolerated number of exceedences per calendar years |
| calendar year | | of tolerance | |
24 hours | | of tolerance | | |
1 hour | | | | |
| calendar year | | | |
1 hour | | | | |
| calendar year | | | |
24 hours | | | | |
| max. daily 8h moving average | | | |
| calendar year | | | |
| max. daily 8h moving average | | of tolerance | 3-year average |
| calendar year | | | |
| calendar year | | | |
| calendar year | | | |
| calendar year | | | |
| calendar year | | | |
| calendar year | | | |
| calendar year | | | |
| month | | | |
Legends | |
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1 | The margin of tolerance is the per cent of air pollution limit or a part of its absolute value, by which the limit value may be exceeded. This value is reduced regularly in subsequent years until it reaches zero value. |
Limit values for the protection of ecosystems | ||||
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Pollutant | Averaging Interval | Limit value | Margin of tolerance 1) (for the year 2001) | Maximum tolerated number of exceedences per calendar years |
| calendar year and witnter period (1.10.-31.3.) | | of tolerance | |
| calendar year | | of tolerance | |
| AOT402) calculated from 1h values between May and July, 5-year average | | of tolerance | |
Legends | |
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1 | The margin of tolerance is the per cent of air pollution limit or a part of its absolute value, by which the limit value may be exceeded. This value is reduced regularly in subsequent years until it reaches zero value. |
2 | AOT40 is the sum of differences between hourly concentrations higher than the threshold concentration 80 μg·m-3 and the value 80 μg·m-3, in the period from 8 a.m. to 8 p.m. CET. |