The COST 726 Total Ozone Climatology (COC) consists of two data files and a easy to use program to extract a time series for a certain location. The program only needs latitude and longitude (decimal point) divided by a comma as input (e.g. 52.21,15.33). Time series, daily means for the period 01.01.1950 - 31.12.2004 is stored in a simple ASCII-file.
Download:
http://tau.igf.edu.pl/~jkrzys/
Reference:
Krzyscin, J.W., Statistical Reconstruction of Daily Total Ozone over Europe 1950 to 2004, Journal of Geophysical Research, Vol.113, D07112, doi: 10.1029/2007JD008881, 2008