“…Most studies related to the measurement and modelling of occupancy patterns usually focus on the simulation of occupant presence and behaviour, like the time the user starts working, finishes work, goes to lunch, and returns in the afternoon [24][25][26][27][28]. Some studies presented algorithms for occupancy number detection based on the analysis of environmental data (i.e., CO 2 , CO, total volatile organic compounds (TVOC), relative humidity (RH), outside temperature, dew point, small particulates, motion, acoustics) captured from sensors [29][30][31][32][33]. Most often, studies combine the approaches of environmental data measurements, energy consumption data and the observations of occupants' presence [34,35].…”