condition mean min max ZT0-3 474.14 474.14 474.14 ZT4-7 569.4285 569.4285 569.4285 ZT8-11 772.2049999999999 772.2049999999999 772.2049999999999 ZT12-15 917.583 917.583 917.583 ZT16-19 519.7860000000001 519.7860000000001 519.7860000000001 ZT20-23 493.3655 493.3655 493.3655