Comment: of the 50 buildings surveyed, the majority of the works are window rate below 50%. In it, 42% of the projects window rate below 20%, 48% of the works window rate from 20% to 50%. Only some works (10%) of the proportion of the window above 50%.In addition to the encryption type for the projects, the type also classified the 8 main groups. Group 1 & Group 2, BC02 BC01 include include BC03 & BC04, group 3 consisted of four groups, including BC06 & BC05 BC07 BC08 BC09 & &, group 5, group 6 BC11 & BC10 include include BC12 & BC13, Group 7 include BC14 & BC15, Group 8 is the BC16. So we can calculate the average percentage of the window on the wall by the Group on the following:
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