1. Aerosol
Physics Laboratory, Department of Physics, Tampere University of Technology, P.O. Box 599, Tampere FIN-33720, Finland
2. Department
of Technology, Metropolia University of Applied Sciences, P.O.
Box 4000, Helsinki FIN-00180, Finland
3. Laboratory
of Applied Thermodynamics, Aristotle University Thessaloniki, P.O. Box
458, Thessaloniki GR 54124, Greece
4. Finnish Meteorological Institute, Air Quality Research, Erik Palmenin aukio 1, Helsinki FIN-00101, Finland