This section has no associated Explanatory Memorandum
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 | |
|---|---|---|---|---|---|
(1) Maximum daily 8-hour mean. | |||||
(2) In this table, “AOT40” has the same meaning as in paragraph 2(d) of Part 4 of Schedule 1. | |||||
| Information threshold | Any | 180μg/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 |
| monthly 1 hour maximum ozone | |||||
| 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 | For each day with any exceedance: date, 8 hours maximum(1) | For each day with any exceedance: date, 8 hours maximum(1) |
| Vegetation protection | Suburban, rural, rural background | AOT40(2) = 6,000 μg/m3.h | 1 hour, accumulated from May to June | Value | |
| Forest protection | Suburban, rural, rural background | AOT40(2) = 20,000μg/m3.h | 1 hour, accumulated from April to September | Value | |
| Materials | Any | 40 μg/m3 | 1 year | Value | |