condition mean min max ZT0-3 95.8802109025 86.95620066 104.804221145 ZT4-7 34.3531440475 21.920275215 46.78601288 ZT8-11 10.606334172499999 7.681338283499999 13.5313300615 ZT12-15 22.7045203575 19.12649333 26.282547385 ZT16-19 44.115201670000005 42.148643675 46.081759665 ZT20-23 51.90399927 50.29880723 53.50919131