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1.1 The following information on ozone concentrations shall be obtained and collated:–
Type of station | Level | Averaging/ accumulation time | Provisional data for each month from April to September | Report for each year | |
---|---|---|---|---|---|
(a) In this Schedule, “AOT40” has the same meaning as in paragraph (d) of Part I to Schedule 2. | |||||
(b) Maximum daily 8 hour mean. | |||||
Information threshold | Any | 180μg/m3 | 1 hour |
| |
Alert threshold | Any | 240μg/m3 | 1 hour | – for each day with any exceedance: date, total hours of exceedance, maximum 1 hour ozone and related NO2 values, when required | – for each day with any exceedance: date, total hours of exceedance, maximum 1 hour ozone and related NO2 values, when required |
Health protection | Any | 120μg/m3 | 8 hours | – or each day with any exceedance: date, 8 hours maximum(b) | – or each day with any exceedance: date, 8 hours maximum(b) |
Vegetation protection | Suburban, rural, rural background | AOT40 (a) =6,000μg/m3.h | 1 hour, accumulated from May to June | Value | |
Forest protection | Suburban, rural, rural background | AOT40 (b) =20,000μg/m3.h | 1 hour, accumulated from April to September | Value | |
Materials | Any | 40μg/m3 | 1 year | Value |
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