condition mean min max ZT0-3 114.209524 114.209524 114.209524 ZT4-7 119.34335949999999 119.34335949999999 119.34335949999999 ZT8-11 134.1976505 134.1976505 134.1976505 ZT12-15 134.867547 134.867547 134.867547 ZT16-19 119.48235 119.48235 119.48235 ZT20-23 130.56260500000002 130.56260500000002 130.56260500000002