condition mean min max ZT0-3 109.3213142625 93.671635525 124.97099299999999 ZT4-7 85.0292820575 76.658911615 93.3996525 ZT8-11 164.8625264225 119.388486245 210.3365666 ZT12-15 273.24276717500004 250.3562614 296.12927295000003 ZT16-19 225.008408225 189.20395235 260.8128641 ZT20-23 140.957374625 130.2259457 151.68880355