condition mean min max ZT0-3 224.52553333333333 59.6221 322.77049999999997 ZT4-7 54.33715 54.33715 54.33715 ZT8-11 40.56765 40.56765 40.56765 ZT12-15 56.709424999999996 51.0439 62.37495 ZT16-19 89.59305 89.59305 89.59305 ZT20-23 170.053 170.053 170.053