1.2 Where they do not do so already, annual reports must also contain–
(a)for ozone, nitrogen dioxide, oxides of nitrogen and the sums of ozone and nitrogen dioxide (added as parts per billion and expressed in (g/m3 ozone) the maximum, 99.9th, 98th and 50th percentiles and annual average and number of valid data from hourly series; and
(b)the maximum, 98th and 50th percentile and annual average from a series of daily 8 hour ozone maxima.