## 3 Results and Discussion
### EQ Category  
As shown in Table 7. In the northern and southern European countries, achievements in the 13 EQ credits were similar, whereas achievements in two credits were different. In particular, similar high achievements were revealed for EQc2 Increased Ventilation, EQc3.1 and EQc3.2 Construction Indoor Air Quality (IAQ) Management plan (During Construction and Before Occupancy), EQc4.1 and EQc4.2 Low-Emitting Materials (Adhesives and Sealants; Paints and Coatings), EQc6.1 Controllability of Systems--Lighting, and EQc7.1 and EQc7.2 Thermal Comfort (Design and Verification), whereas similar low achievements were revealed for EQc4.3 and EQc4.4 Low-Emitting Materials (Flooring Systems and Composite Wood and Agrifiber Products), EQc6.2 Controllability of Systems--Thermal Comfort, and EQc8.1 and EQc8.2 Daylight and Views (Daylight and Views). Different achievements were revealed for EQc1 Outdoor Air Delivery Monitoring (Finland's achievement was the best, whereas Sweden's achievement was the worst; and Spain's achievement was the best, whereas Turkey's achievement was the worst) and EQc5 Indoor Chemical and Pollutant Source Control (Finland's, Turkey's, and Spain's achievements were the best, whereas Sweden's achievement was the worst).  
Thus, eight EQ credits were high-achieving, whereas five credits were low-achieving, resulting in an intermediate achievement EQ category (40-60% in northern European countries and 60-65% in southern European countries). EQ is a well-known intermediate-achievement category due to approximately half of the EQ credits (such as those related to Increased Ventilation, IAQ, low-emission Adhesives and Paints, and Thermal Comfort) that have good possibilities for achieving points. Such EQ achievements were previously confirmed in other research related to LEED-NC 2009 certified projects  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{**Credit**} & \multirow{2}{*}{**Pt**} & \multicolumn{2}{c}{**Finland**} & **Sweden** & **Finland vs. Sweden** & **Turkey** & **Spain** & **Turkey vs. Spain** \\ \cline{3-10}  & & \multicolumn{2}{c}{**Median \(\pm\) IQR** [25-75]} & \multicolumn{1}{c}{_p_} & \multicolumn{1}{c}{_\$_b_} & **Median \(\pm\) IQR** [25-75] & \(p\) & **\$_b_** \\ \hline MRc6 & 1 & 0.0 \(\pm\) 0.0 \({}^{\rm b}\) & 0.0 \(\pm\) 0 \({}^{\rm b}\) & 1.000 & 0.00 & 0.0 \(\pm\) 0.0 \({}^{\rm b}\) & 0.0 \(\pm\) 0.0 \({}^{\rm b}\) & 0.110 & 0.14 \\ MRc7 & 1 & 0.0 \(\pm\) 0.0 \({}^{\rm b}\) & 0.0 \(\pm\) 0 \({}^{\rm b}\) & 1.000 & 0.00 & 0.0 \(\pm\) 0.0 \({}^{\rm b}\) & 0.0 \(\pm\) 0.0 \({}^{\rm b}\) & 0.111 & \(-\)0.33 \\ MR & 14 & 3.0 \(\pm\) 3.0 \({}^{\rm b}\) & 4.0 \(\pm\) 3.0 \({}^{\rm b}\) & 0.682 & \(-\)0.08 & 6.0 \(\pm\) 1.0 \({}^{\rm b}\) & 6.0 \(\pm\) 2.0 \({}^{\rm b}\) & 0.641 & \(-\)0.06 \\ \hline \hline \end{tabular}  
* Similar high achievements, \({}^{\rm b}\) similar low achievements, \({}^{\rm c}\) different achievements. The \(p\) values: bold font—seems to be positive, ordinal font size—seems to be negative, italic font—judgment is suspended.  
\end{table}
Table 6: _Cont._  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{**Credit**} & \multirow{2}{*}{**Pt**} & \multicolumn{2}{c}{**Finland**} & **Sweden** & **Finland vs. Sweden** & **Turkey** & **Spain** & **Turkey vs. Spain** \\ \cline{3-10}  & & \multicolumn{2}{c}{**Median \(\pm\) IQR** [25-75]} & \multicolumn{1}{c}{_p_} & \multicolumn{1}{c}{_$_b_**} & **Median \(\pm\) IQR** [25-75] & \(p\) & **\$_b_** \\ \hline EQc1 & 1 & \(1.0\pm 1.0\) \({}^{\rm c}\) & 0.0 \(\pm\) 0.9 \({}^{\rm c}\) & **0.008** & 0.34 & 0.0 \(\pm\) 1.0 \({}^{\rm c}\) & 1.0 \  
throughout the world and in the U.S. [PERSON] et al. [7] reported 60% EQ performance, and [PERSON] and [PERSON] [8] reported a 60-65% EQ performance.