condition mean min max ZT0-3 117.21887269000001 92.86371948 141.5740259 ZT4-7 74.267789585 65.47797491 83.05760426 ZT8-11 166.9251667825 124.86585576499999 208.9844778 ZT12-15 111.376556935 60.659418515 162.093695355 ZT16-19 44.3239456675 39.458222895 49.18966844 ZT20-23 32.7089750025 30.028684195 35.38926581