condition mean min max ZT0-3 150.295815175 121.4683351 179.12329525 ZT4-7 95.61711307499999 88.977359095 102.25686705499999 ZT8-11 109.35839244750001 99.711542595 119.00524230000002 ZT12-15 81.64404192250001 74.094054325 89.19402952 ZT16-19 136.083846575 123.81717725000001 148.3505159 ZT20-23 147.239368025 136.17624765 158.30248840000002