AP Reader 1.2

Rijdat Software - www.rijdatsoft.co.uk January 2001

Thank you for downloading AP Reader 1.2 from Rijdat Software.  AP Reader
plots air pollution data downloaded from the UK Government's air quality
archive, and calculates statistics, including comparison to the National
Air Quality Strategy objectives and other standards.  AP Reader can read
both HTML and CSV files.

The main display of AP Reader shows you how average pollution levels
vary through the day, on all days and on weekdays only, the pollution
profile during the year, and sshows two 'Year-at-a-glance' charts which
show the whole years data in one go 365 days long and 24 hours high. 
The lower chart emphasises the lower pollution values, which often makes
the structure in the plot clearer.  The main display also shows you the
major statistics  for the data and how these data compare to the
National Air Quality Strategy, WHO and European standards.

AP Reader can also export the data you have read in in three different
formats as CSV files suitable for reading into a spreadsheet application
such as Excel:

(i)  Like the Air Quality Archive files, with 24 hours across and 365/6
days down. (ii) As two columns, the hour number and the reading for that
hour. (iii) As a single column of each hour, so you can plot the whole
year easily.

Note:  AP Reader denotes missing data with the value -9 in these
exported files and any values which are supposed to be valid but are
negative are set to zero.

Also included in this package is an example HTML file for Edinburgh's
NO2 data for 1999.  The National Air Quality Archive is at:
http://www.aeat.co.uk/netcen/airqual  Follow the links to the Automatic
Monitoring Network to download the files for the sites and pollutants
you are interested in.  Once you have downloaded these files, use AP
Reader to examine them.

Note:  while we have attempted to get all our calculations right Rijdat
Software cannot be held responsible for any errors in the results
presented by AP Reader.  In important cases ALWAYS double check your
results.

AP Reader is shareware.    If you use it regularly please send 15 to
Rijdat Software - e-mail us at register@rijdatsoft.co.uk for details or
pay on-line (in US dollars) via our website. If you register you will 
be eligible for our help service and upgrades. Send enquiries or 
feature requests to support@rijdatsoft.co.uk

 Rijdat Software - info@rijdatsoft.co.uk       January 2001
