We have seperated our datasets into two groups - station mode data and gridded datases. In case of station data, we are not able to provide our complete collection due to restrictions of the original data providers - the gridded files include, of cause all available data.
All HISTALP Data will be provided free of charge, provided the sources are acknowledged. Acknowledgement should preferably be by citing one or more of the appropriate papers (see References) and the source of the data: http://www.zamg.ac.at/histalp
The exact reference can be also found within the readme file provided whith each dataset.