condition mean min max ZT0-3 145.37333333333333 91.3225 183.35750000000002 ZT4-7 92.739 92.739 92.739 ZT8-11 99.47534999999999 99.47534999999999 99.47534999999999 ZT12-15 154.92325 148.647 161.1995 ZT16-19 171.197 171.197 171.197 ZT20-23 206.216 206.216 206.216