condition mean min max ZT0-3 140.128052 140.128052 140.128052 ZT4-7 150.738268 150.738268 150.738268 ZT8-11 158.36621399999999 158.36621399999999 158.36621399999999 ZT12-15 158.7484115 158.7484115 158.7484115 ZT16-19 484.4052175 484.4052175 484.4052175 ZT20-23 566.674051 566.674051 566.674051