## 3 Results and Discussion
### Thermal Conditions
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Month** & **Parameter** & **Ground Floor** & **1 st Floor** & **2 nd Floor** & **Outdoor** \\ \hline \multirow{4}{*}{February} & T (\({}^{\circ}\)C) & 15.42 & 16.47 & 17.57 & 12.07 \\  & RH (\%) & 52.13 & 50.52 & 47.30 & 63.13 \\  & T (\({}^{\circ}\)C) & 16.75 & 17.12 & 18.39 & 15.97 \\  & RH (\%) & 50.66 & 50.55 & 45.68 & 52.42 \\  & T (\({}^{\circ}\)C) & 19.82 & 18.92 & 20.11 & 17.79 \\  & RH (\%) & 50.46 & 51.42 & 48.70 & 56.10 \\  & T (\({}^{\circ}\)C) & 21.50 & 21.44 & 23.92 & 22.15 \\  & RH (\%) & 53.83 & 51.84 & 42.98 & 51.49 \\  & T (\({}^{\circ}\)C) & 25.85 & 25.72 & 29.15 & 28.43 \\  & RH (\%) & 52.49 & 51.22 & 41.71 & 44.68 \\  & T (\({}^{\circ}\)C) & 26.11 & 26.15 & 27.85 & 30.15 \\  & RH (\%) & 47.84 & 46.10 & 39.94 & 39.78 \\  & T (\({}^{\circ}\)C) & 27.11 & 27.11 & 29.61 & 31.19 \\  & RH (\%) & 40.30 & 43.94 & 36.96 & 35.53 \\  & T (\({}^{\circ}\)C) & 25.40 & 26.63 & 28.12 & 27.43 \\  & RH (\%) & 41.65 & 44.89 & 37.91 & 42.73 \\  & T (\({}^{\circ}\)C) & 23.04 & 24.50 & 25.73 & 23.49 \\  & RH (\%) & 53.36 & 53.03 & 45.47 & 55.29 \\  & T (\({}^{\circ}\)C) & 20.72 & 21.62 & 20.38 & 19.18 \\  & RH (\%) & 63.97 & 61.29 & 64.44 & 69.83 \\  & T (\({}^{\circ}\)C) & 17.63 & 18.96 & 19.85 & 13.41 \\  & RH (\%) & 55.57 & 53.21 & 51.30 & 54.90 \\  & & 2020 & & & \\  & T (\({}^{\circ}\)C) & 14.67 & 16.48 & 18.29 & 10.37 \\  & RH (\%) & 49.80 & 47.57 & 43.02 & 59.08 \\  & T (\({}^{\circ}\)C) & 17.06 & 17.23 & 18.70 & 11.30 \\  & RH (\%) & 48.50 & 49.93 & 45.20 & 54.90 \\  & T (\({}^{\circ}\)C) & 16.33 & 17.36 & 18.74 & 16.44 \\  & RH (\%) & 55.10 & 52.01 & 46.72 & 50.73 \\  & T (\({}^{\circ}\)C) & 20.84 & 22.53 & 25.87 & 23.96 \\  & RH (\%) & 53.84 & 50.38 & 41.24 & 45.99 \\  & T (\({}^{\circ}\)C) & 23.22 & 24.73 & 27.77 & 26.88 \\  & RH (\%) & 55.94 & 51.84 & 42.98 & 46.43 \\  & T (\({}^{\circ}\)C) & 26.61 & 28.26 & 31.19 & 31.02 \\  & RH (\%) & 49.03 & 45.28 & 37.00 & 38.00 \\  & T (\({}^{\circ}\)C) & 27.63 & 29.30 & 31.91 & 30.93 \\  & RH (\%) & 48.38 & 44.30 & 37.06 & 40.23 \\  & T (\({}^{\circ}\)C) & 27.63 & 29.30 & 31.95 & 30.96 \\  & RH (\%) & 48.38 & 44.30 & 37.06 & 40.23 \\  & T (\({}^{\circ}\)C) & 2021 & & & \\  & T (\({}^{\circ}\)C) & 15.28 & 16.46 & 16.81 & 13.28 \\  & RH (\%) & 57.89 & 56.13 & 54.87 & 65.08 \\  & T (\({}^{\circ}\)C) & 20.25 & 17.21 & 18.24 & 13.61 \\  & RH (\%) & 44.99 & 52.80 & 49.61 & 63.22 \\  & T (\({}^{\circ}\)C) & 16.66 & 17.52 & 17.76 & 15.04 \\  & RH (\%) & 46.29 & 45.25 & 45.12 & 52.12 \\  & T (\({}^{\circ}\)C) & 16.91 & 17.69 & 19.03 & 17.46 \\  & RH (\%) & 51.58 & 49.69 & 46.40 & 50.76 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Average monthly values of temperature (\({}^{\circ}\)C) and relative humidity (\(\%\)) in and out of the building during the entire experimental period. From Figure 4, it is obvious that the offices (2 nd floor) present the highest mean monthly T during the cold months, which is mainly due to the frequent use of HVAC split units by the museum's personnel during operating hours. However, during the summer, the air conditioning units do not seem to retain adequate levels of T within the room, as this was later found to be close to the external values of T.  
In addition, the average monthly T within the e Applied Sciences and Philosophy exhibition rooms (2 nd floor) also demonstrated high values, overpassing the proposed limit range (23-26 \({}^{\circ}\)C) during the summer months. As mentioned above, this is mainly because the roof of the second floor absorbs large amounts of solar radiation during the hot days of the Greek summer, resulting in higher internal T values within the lower rooms. Another interesting result, which applies to all of the rooms under investigation, is that the mean monthly values of T were found to be lower than the proposed limit range (20-23 \({}^{\circ}\)C) for the cold months of December, January, February, and March.