condition mean min max ZT0-3 91.570616175 80.72725754999999 102.4139748 ZT4-7 79.51298559 77.506758545 81.519212635 ZT8-11 58.8616660225 52.330182025 65.39315002000001 ZT12-15 23.764002089999998 20.96978986 26.55821432 ZT16-19 38.96102539500001 30.822745465000004 47.099305325 ZT20-23 73.02010920250001 64.272007075 81.76821133