condition mean min max ZT0-3 68.11173333333333 53.70925 83.08635000000001 ZT4-7 35.4377 35.4377 35.4377 ZT8-11 20.965600000000002 20.965600000000002 20.965600000000002 ZT12-15 20.690974999999998 18.7354 22.646549999999998 ZT16-19 37.13 37.13 37.13 ZT20-23 73.64920000000001 73.64920000000001 73.64920000000001