## 2 Materials and Methods
### Experimental Setup  
A meteorological station (Kipp & Zonen) equipped with a Sun tracker, SOLYS 2, and a humidity and temperature probe HMP60, (Vaisala, Finland), was used to measure the outdoor conditions. In addition, pyranometers to measure the vertical global solar radiation and thermocouples to measure the solar-air temperature were installed on the building facade. Table 4 presents the list of sensors for outdoor measurements. Table 5 shows the sensors used to measure the HVAC power, thermal comfort, visual comfort, and thermal performance of the window. Thermal and visual comfort sensors were centered 1.5 m from the window at a height of 1.15 m to reflect a seated person's eye (Figure 1). Current/voltage sensors Multivoies (Multichannel energy consumption Data Logging) produced by the OmegaWatt Company, France, were used to measure HVAC power. A SensoData 5500 MK (Sensor Electronic, Poland) was installed in each room to measure thermal comfort, the SensoData was composed of a standard datalogger SensoData 5500 and a set of sensors, SensoTCMod 5507. To evaluate visual comfort, the Complementary Metal Oxide Semiconductor (CMOS) Sensor Sony IMX219 was used to measure the luminance distribution, as reported by [31; 32]. They determined that the luminance range varies from 3 to 18,000 cd/m\({}^{2}\) with an average accuracy of 3.0% to 17.5%, which is appropriate for interior luminance measurements. Figure 3 shows the locations of the rest of the sensors installed on the window of each room. Figure 4 shows fisheye pictures of both offices at 9:00 and 11:00 h. In the case of the PCM room, Figure 4 shows the \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Sensor** & **Measurement** & **Model** & **Company** & **Quantity** & **Accuracy** \\ \hline Pyheliometer & Direct solar radiation & CHP1 & Kipp \& Zonen & 1 & \(\pm\)3\% \\ Sun trucker & - & SOLYS 2 & Kipp \& Zonen & 1 & - \\ Pyranometer & Diffuse solar radiation & CMP11 & Kipp \& Zonen & 2 & \(\pm\)1.35\% \\ Pyranometer & \multirow{2}{*}{\begin{tabular}{c} Relative humidity and \\ temperature \\ \end{tabular} } & CMP11 & Kipp \& Zonen & 1 & \(\pm\)1.35\% \\ Humidity and & Relative humidity and & HMP60 & Vaisala & 1 & \(\pm\)3\% (temp) \& \(\pm\)5\% (RH) \\ temperature & \multirow{2}{*}{\
\begin{tabular}{c} Solar-air temperature \\ Global vertical solar \\ radiation \\ \end{tabular} } & Type T & Pelican Wire & 1 & \(\pm\)5\% \\ Pyranometer & \multirow{2}{*}{
\begin{tabular}{c} Global vertical solar \\ radiation \\ \end{tabular} } & CMP11 & Kipp \& Zonen & 1 & \(\pm\)1.35\% \\ \hline \hline \end{tabular}
\end{table} 
Table 4: List of sensors of meteorological station and for outdoor measurements. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Season** & **Day** & **Type** & \begin{tabular}{c} **T\({}_{\text{min}}\)** \\ (°C) \\ \end{tabular} & \begin{tabular}{c} **T\({}_{\text{max}}\)** \\ (°C) \\ \end{tabular} & \
\begin{tabular}{c} **T\({}_{\text{avg}}\)** \\ (°C) \\ \end{tabular} &
\begin{tabular}{c} **I\({}_{\text{t}}\)** \\ (**Wh/m\({}^{2}\)day**) \\ \end{tabular} \\ \hline Summer & 19 February 2020 & Sunny & 17.8 & 35.4 & 25.9 & 8749 \\  & 20 February 2020 & Sunny & 18.3 & 34.6 & 25.3 & 8651 \\  & 7 March 2020 & Mostly sunny & 16.6 & 33.0 & 23.6 & 7370 \\ \hline Mid-season warm & 17 October 2020 & Sunny & 12.7 & 29.4 & 19.7 & 8330 \\  & 16 October 2020 & Partly cloudy & 4.6 & 25.9 & 18.2 & 7683 \\  & 25 September 2020 & Cloudy & 9.0 & 11.9 & 10.4 & 954 \\ \hline Mid-season cold & 16 May 2020 & Sunny & 11.2 & 28.5 & 19.0 & 4145 \\  & 11 May 2020 & Partly cloudy & _7.7_ & 22.0 & 13.9 & 4274 \\  & 19 May 2020 & Cloudy & _7.4_ & 12.6 & 10.0 & 1312 \\ \hline Winter & 13 July 2020 & Sunny & 7.3 & 25.6 & 14.7 & 3752 \\  & 9 July 2020 & Partly cloudy & 7.3 & 18.8 & 11.3 & 3069 \\  & 10 July 2020 & Cloudy & 8.4 & 14.5 & 10.7 & 1233 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Representative days for each season.