condition mean min max ZT0-3 42.943466666666666 14.26125 94.6082 ZT4-7 167.558 167.558 167.558 ZT8-11 167.5005 167.5005 167.5005 ZT12-15 88.218525 53.96555 122.47149999999999 ZT16-19 89.55885 89.55885 89.55885 ZT20-23 54.1589 54.1589 54.1589