condition mean min max ZT0-3 43.40336653 39.44988104 47.35685202 ZT4-7 31.04580206 30.62283015 31.46877397 ZT8-11 21.9864267625 21.787850735 22.18500279 ZT12-15 95.78582137750001 81.72659985500002 109.84504290000001 ZT16-19 123.25700175 113.6440283 132.8699752 ZT20-23 121.5235627 118.63643575 124.41068965