condition mean min max ZT0-3 130.96683333333334 113.541 148.132 ZT4-7 98.7365 98.7365 98.7365 ZT8-11 102.71995 102.71995 102.71995 ZT12-15 201.055 180.52949999999998 221.5805 ZT16-19 198.083 198.083 198.083 ZT20-23 156.96249999999998 156.96249999999998 156.96249999999998