Annual maxima of daily maximum ozone levels at Bloomsbury in London (UK) for the years 1992-2024 inclusive.
Format
BloomsburyOzoneMaxima is a data frame with 33 rows (years 1992 to
2024) and the 4 variables:
maxima: annual maximum ozone level in \(\mu\)g/m\(^3\).notNA: the number of days of the year for which raw data were available.n: the number of days in the year (365 or 366).block: a block number of 1 for year 1992 through to 33 for year 2024.
The row names of BloomsburyOzoneMaxima are the years 1992:2024.
The raw data are missing for approximately \(5\%\) of the days.
Source
The Department for Environment Food and Rural Affair (DEFRA). The London Bloomsbury monitoring site at the UK-AIR database Data Selector.
See also
BloomsburyOzone for the raw time series.
Examples
head(BloomsburyOzoneMaxima)
#> maxima notNA n block
#> 1992 146 336 366 1
#> 1993 186 354 365 2
#> 1994 190 351 365 3
#> 1995 204 335 365 4
#> 1996 180 359 366 5
#> 1997 140 350 365 6
# Time series plot of annual maxima ozone levels
plot(rownames(BloomsburyOzoneMaxima), BloomsburyOzoneMaxima$maxima,
ylab = "ozone (micrograms / metre cubed)", xlab = "year", pch = 16)
# Time series plot of proportion of non-missing days
plot(rownames(BloomsburyOzoneMaxima),
BloomsburyOzoneMaxima$notNA / BloomsburyOzoneMaxima$n,
ylab = "proportion of non-missing days", xlab = "year", pch = 16)
# Plot ozone levels against the proportion of non-missing days
plot(BloomsburyOzoneMaxima$notNA / BloomsburyOzoneMaxima$n,
BloomsburyOzoneMaxima$maxima,
ylab = "ozone (micrograms / metre cubed)",
xlab = "proportion of non-missing days", pch = 16)
