## 3 Results and Discussions
### Annual Variations in the Indoor Air Temperature and Relative Humidity
Figure 9 shows the variation in air temperature and humidity obtained by all sensors over a period of one year, by calculating the median, minimum and maximum values, and the corresponding 25 th and 75 th percentiles. Figure 8: Daily mean relative humidity for inside sensors during 1 February 2020–31 January 2021. Figure 7: Daily mean temperature for inside sensors during 1 February 2020–31 January 2021. Table 7 shows that during the warm season (unheated period) median values were higher than those from the cold season (heated period), and that the variation in temperature and humidity were larger (indicated by the percentile values). The same situation was observed by [PERSON] et al. [23] when they analyzed three museums in Poland (temperate climate). The analysis of external heat and moisture gain impact was carried out in the warm season (March until October), using the mean daily values for air temperature and moisture. During the observations made, the external temperature varied from 9.3 to 24.3 \({}^{\circ}\)C and the external humidity from 37.8 to 66.8%. The internal temperature varied in the range 13.7-22.6 \({}^{\circ}\)C in the basement and 14.6-25.9 \({}^{\circ}\)C in the upper rooms, while air humidity varied from 53.1-81.3% in the basement and 47.8-64.4% in the rest of the rooms. Table 8 shows the correlations between the indoor and outdoor air temperatures illustrating the \begin{table}
\begin{tabular}{l c c c c c c c c c c c} \hline \hline  & \multicolumn{6}{c}{**Temperature**} & \multicolumn{6}{c}{**Humidity**} \\ \hline
**Unheated period** & **A** & **B** & **C** & **D** & **E** & **F** & **A** & **B** & **C** & **D** & **E** & **F** \\ \hline Median & 20.17 & 20.11 & 18.78 & 20.55 & 18.5 & 18.5 & 53.5 & 53.16 & 65.7 & 53.03 & 60.26 & 57.16 \\ Min & 11.6 & 11.2 & 13.08 & 12.38 & \(-3.7\) & \(-1.9\) & 37.72 & 38.67 & 37.17 & 37.3 & 9.1 & 15.09 \\ Max & 27.25 & 27.5 & 24.4 & 227.03 & 35.74 & 35.9 & 72.6 & 76.9 & 91.42 & 74.37 & 100 & 96.62 \\
25\% & 17.34 & 17.2 & 14.76 & 17.27 & 12.46 & 12.77 & 51.02 & 50.5 & 56.7 & 49.57 & 42.55 & 41.9 \\
75\% & 24.24 & 24.3 & 21.5 & 24.38 & 22.94 & 23.13 & 48.12 & 48.59 & 55.22 & 47.21 & 93.60 & 88.75 \\ \hline
**Heated period** & & & & & & & & & & & \\ \hline Median & 18.69 & 18.15 & 15.58 & 18.77 & 4.14 & 4.76 & 44.87 & 45.77 & 49.32 & 45.16 & 88.05 & 83.48 \\ Min & 13.5 & 13.3 & 12.37 & 12.34 & \(-3.74\) & \(-1.958\) & 18.4 & 17.9 & 12.3 & 18.43 & 19 & 24.36 \\ Max & 21.7 & 20.3 & 20.69 & 21.29 & 21.41 & 20.17 & 72.3 & 74.11 & 70.97 & 70.71 & 100 & 99.6 \\
25\% & 18.15 & 17.7 & 14.2 & 18.58 & 1.39 & 2.28 & 40.03 & 40.7 & 44.42 & 39.8 & 75.53 & 71.28 \\
75\% & 18.98 & 18.4 & 17.2 & 18.88 & 7.87 & 8.1 & 53.58 & 53.6 & 56.53 & 53.61 & 94.6 & 89.9 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Median, minimum and maximum values, 25 th and 75 th percentiles for air temperature and humidity for all sensors (A—S1; B—S2; C—S3; D—S4; E—S5; F—S6) in unheated (March–October) and heated (October–February) periods of the entire year. Figure 9: Annual median (black line in the colored box), minimum and maximum values outliers and 25–75 percentile of air temperature (**a**) and air humidity (**b**) for all sensors (A—S1; B—S2; C—S3; D—S4; E—S5; F—S6). increase in indoor heat. Only the temperature values in the basement did not follow the general trend. Figure 10 shows the outdoor impact of temperature values on indoor microclimate. Table 9 shows the correlations between indoor and outdoor air humidity. A correlation close to 1 was observed for the S1, S2 and S4 sensors, while a weak correlation obtained for the S5 sensor in relation to the others is explained by the impact of outdoor humidity on indoor air humidity. It was observed that the indoor humidity in the basement had higher values than the outdoor humidity. Figure 11 shows the impact of the outdoor air humidity on the indoor climate, during the entire period. Table 10 shows the ASHRAE classification for the NW room, NE room, SE Room and basement.