ina12119-sup-0001-SuppInfo.docWord document308K

Figure S1. Time-weighted averages of the percentage of windows opened (100% means that all windows were opened), of the measured classroom CO2 concentrations and the classroom temperatures during school hours (8:00–15.00) with and without visual CO2 feedback in classrooms with a mechanical ventilation system.

Figure S2. Time-weighted average values of the outdoor temperatures registered during the experiments in winter (heating season) and in late spring/early summer (non-heating season); only the periods during school hours (8:00–15:00) are shown

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