condition mean min max ZT0-3 84.65881022333332 72.41433513999999 96.90328530666666 ZT4-7 103.65333040166666 91.78668810333333 115.51997270000001 ZT8-11 102.03352559333334 101.27822321666667 102.78882797 ZT12-15 106.208727805 92.94494881 119.4725068 ZT16-19 92.69668633 92.51137097 92.88200169 ZT20-23 80.97202314500001 69.03449088 92.90955541000001