## 3 Results
### Energy and Atmosphere  
Figure 5 demonstrates the Boxplot and [PERSON]'s \(\delta\) results in EA category. According to the boxplot, the median increased from Certified, Silver, and Gold (19, 18, and 22 achieved points, respectively) to Platinum (32 achieved points), with decrease in the range from Certified, Silver, and Gold (6-25, 9-27, and 17-29 achieved points, respectively) to Platinum with 27-33 achieved points. According to [PERSON]'s \(\delta\), the EA category showed low achievement in all four certification levels.  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Credit**} & \multirow{2}{*}{
\begin{tabular}{c} **Possible** \\ **Points** \\ \end{tabular} } & \multicolumn{4}{c}{**Achieved Points**} \\ \cline{3-6}  & & **Certified** & **Silver** & **Gold** & **Platinum** \\ \hline Cooling tower & \multirow{2}{*}{2} & 0.0 \(\pm\) 0.0 & 0.0 \(\pm\) 0.0 & 0.0 \(\pm\) 0.0 & 0.0 \(\pm\) 1.0 \\ water use & & 1.00 & 0.91 & 0.91 & 1.00 \\ \hline Water metering & \multirow{2}{*}{1} & 1.0 \(\pm\) 1.0 & 1.0 \(\pm\) 1.0 & 1.0 \(\pm\) 1.0 & 1.0 \(\pm\) 0.0 \\  & & _0.45_ & _0.41_ & _0.36_ & **0.00** \\ \hline Outdoor water & \multirow{2}{*}{2} & 2.0 \(\pm\) 1.0 & 2.0 \(\pm\) 1.0 & 1.0 \(\pm\) 1.0 & 2.0 \(\pm\) 0.3 \\ use reduction & & _0.34_ & _0.45_ & _0.45_ & **0.20** \\ \hline Indoor water & \multirow{2}{*}{6} & 3.0 \(\pm\) 2.0 & 3.0 \(\pm\) 2.0 & 3.0 \(\pm\) 2.0 & 5.0 \(\pm\) 1.3 \\ use reduction & & 0.91 & 1.00 & 0.82 & 0.60 \\ \hline \hline \end{tabular} Notes: Effect size is considered to be: very high if \(|\delta|<0.147\) (bold font), high if \(0.147<|\delta|<0.33\) (bold italic font), medium if \(0.33<|\delta|<0.474\) (italic font), and low if \(|\delta|\geq 0.474\) (normal font).  
\end{table}
Table 4: Credit points achieved for Water Efficiency category of LEED-NCv4 projects: median \(\pm\) IQR (25 th–75 th) and Cliff’s \(\delta\) effect size between possible and achieved points in a credit.  
Figure 5: The boxplot results and Cliff’s \(\delta\) effect size between possible and achieved points in the Energy and Atmosphere category. Effect size is considered to be: very high if \(|\delta|<0.147\) (bold font), high if \(0.147<|\delta|<0.33\) (bold italic font), medium if \(0.33<|\delta|<0.474\) (italic font), and low if \(|\delta|\geq 0.474\) (normal font).  
Table 5 shows median \(\pm\) IQR (25 th-75 th) and [PERSON]'s \(\delta\) results in EA credits. In four certification levels, three of the seven EA credits had similar [PERSON]'s \(\delta\) effect sizes between possible and achieved points. Enhanced commissioning, Demand response, and Enhanced refrigerant management credits showed low achievement in all four certification levels. Enhanced commissioning refers to the completion of commissioning processes for mechanical, electrical, plumbing, and renewable energy systems; Demand response requires installation of automated systems for energy-related equipment; and Enhanced refrigerant management is related to prohibiting refrigerants or using special low-impact refrigerants [5].  
Four other EA credits had different [PERSON]'s \(\delta\) effect sizes between possible and achieved points in different certification levels (Table 5). Advanced energy metering credit gradually increased from low achievement in Certified projects through medium in Silver and Gold projects to very high in Platinum projects. Renewable energy production and Green power and carbon offsets credits showed low achievement in Certified and Silver projects, medium in Gold projects, and very high in Platinum projects. The Optimize energy performance credit had low achievement in Certified, Silver, and Gold projects and very high in Platinum projects.