summer and winter data

summer

winter

Air pollution data from Leeds (U.K.) city centre, collected from 1994 to
1998. The <code>summer</code> data set corresponds to the months of April to July
inclusive. The <code>winter</code> data set corresponds to the months of November
to February inclusive. Some outliers have been removed, as discussed by
Heffernan and Tawn, 2004.

datasets

Statistical extreme value modelling of threshold excesses, maxima
and multivariate extremes. Univariate models for threshold excesses and maxima
are the Generalised Pareto, and Generalised Extreme Value model respectively.
These models may be fitted by using maximum (optionally penalised-)likelihood,
or Bayesian estimation, and both classes of models may be fitted with covariates
in any/all model parameters. Model diagnostics support the fitting process.
Graphical output for visualising fitted models and return level estimates is
provided. For serially dependent sequences, the intervals declustering algorithm
of Ferro and Segers (2003) <doi:10.1111/1467-9868.00401> is provided, with
diagnostic support to aid selection of threshold and declustering horizon.
Multivariate modelling is performed via the conditional approach of Heffernan
and Tawn (2004) <doi:10.1111/j.1467-9868.2004.02050.x>, with graphical tools for
threshold selection and to diagnose estimation convergence.

Harry Southworth

texmex

Statistical Modelling of Extreme Values

Yiannis Papastathopoulos

Alec Stephenson

Stuart Coles

summer and winter data function

Data frames with 578 (summer) and 532 (winter) observations on the
following 5 variables.<dl>
<dt>O3</dt>
<dd>Daily maximum ozone in
parts per billion.</dd><dt>NO2</dt>
<dd>Daily maximum NO2 in parts per
billion.</dd><dt>NO</dt>
<dd>Daily maximum NO in parts per billion.</dd><dt>SO2</dt>
<dd>Daily maximum SO2 in parts per billion.</dd><dt>PM10</dt>
<dd>Daily maximum PM10 in micrograms/metre^3</dd>
</dl>

Format

Air pollution data, separately for summer and winter months — summer and winter data

Data frames with 578 (summer) and 532 (winter) observations on the
following 5 variables.<dl>
<dt>O3</dt>
<dd>Daily maximum ozone in
parts per billion.</dd>

<dt>NO2</dt>
<dd>Daily maximum NO2 in parts per
billion.</dd>

<dt>NO</dt>
<dd>Daily maximum NO in parts per billion.</dd>

<dt>SO2</dt>
<dd>Daily maximum SO2 in parts per billion.</dd>

<dt>PM10</dt>
<dd>Daily maximum PM10 in micrograms/metre^3</dd>


</dl>

summer and winter data: Air pollution data, separately for summer and winter months

Description

Arguments

Format

References

Examples