Monitoring and continuous Commissioning of new and existing Buildings Teriö Olli, Räinä Ilkka, Hienonen Markku, Kääriäinen Hannu and Kauppinen Timo E3S Web Conf., 172 (2020) 22009 Published online: 30 June 2020 DOI: 10.1051/e3sconf/202017222009