condition mean min max ZT0-3 80.1347 80.1347 80.1347 ZT4-7 54.119749999999996 54.119749999999996 54.119749999999996 ZT8-11 56.532849999999996 56.532849999999996 56.532849999999996 ZT12-15 83.1429 83.1429 83.1429 ZT16-19 161.9415 161.9415 161.9415 ZT20-23 96.2132 96.2132 96.2132