condition mean min max ZT0-3 99.151231 99.151231 99.151231 ZT4-7 87.30717949999999 87.30717949999999 87.30717949999999 ZT8-11 96.53746 96.53746 96.53746 ZT12-15 93.150824 93.150824 93.150824 ZT16-19 118.404462 118.404462 118.404462 ZT20-23 102.580702 102.580702 102.580702