On June, 9th the Dutch company Strukton Worksphere (www.struktonworksphere.com)  organized in close cooperation with the Council for Secondary Schools the conference with the name “Each day fresh air”. The subject was the climate in class rooms. In the conference Strukton Worksphere presented results of large scale measurement.

For executing these measurements WiSensys was used. In more than 15 schools and more than 60 class rooms measurements were executed during several months. During this period the CO2 level, the temperature and the relative humidity were measured. The picture below shows a typical measurement of a day in December.