condition mean min max ZT0-3 79.32865 79.32865 79.32865 ZT4-7 102.13612699999999 102.13612699999999 102.13612699999999 ZT8-11 91.635303 91.635303 91.635303 ZT12-15 75.6492575 75.6492575 75.6492575 ZT16-19 73.4453935 73.4453935 73.4453935 ZT20-23 60.5358235 60.5358235 60.5358235