condition mean min max ZT0-3 97.462839 97.462839 97.462839 ZT4-7 70.906509 70.906509 70.906509 ZT8-11 88.711682 88.711682 88.711682 ZT12-15 86.3673505 86.3673505 86.3673505 ZT16-19 115.462207 115.462207 115.462207 ZT20-23 116.6914645 116.6914645 116.6914645