condition mean min max ZT0-3 87.5905909775 69.51549321 105.665688745 ZT4-7 74.866156355 72.61055114 77.12176157 ZT8-11 96.17563473 93.8298602 98.52140926 ZT12-15 107.57788777 102.83336710666667 112.32240843333334 ZT16-19 107.44664866166667 105.23730362333333 109.6559937 ZT20-23 96.00622809500001 94.15452713666667 97.85792905333334