condition mean min max ZT0-3 82.0751 68.96535 95.18485000000001 ZT4-7 97.0358 97.0358 97.0358 ZT8-11 132.5975 132.5975 132.5975 ZT12-15 0 0 0 ZT16-19 168.78 168.78 168.78 ZT20-23 86.8387 86.8387 86.8387