¹ Thermal Comfort Index: Calculated as the absolute difference between the average indoor temperature and the target comfort temperature of 23.5°C. A value of 0°C represents ideal thermal comfort. Lower values indicate better comfort performance, while higher values indicate greater deviation from the desired temperature.

² Electricity Cost: Calculated by summing the product of heating power and electricity import price across all recorded measurements. Lower values indicate more economical operation, while higher values indicate greater energy expenditure.