condition mean min max ZT0-3 11.4426317455 9.215518953 13.669744538 ZT4-7 26.4468014425 22.50649687 30.387106015 ZT8-11 42.761255165 36.82554333 48.696967 ZT12-15 62.65724146 58.41017445 66.90430847 ZT16-19 60.254928695 55.95460016 64.55525723 ZT20-23 45.376769315000004 43.216100945 47.537437685