condition mean min max ZT0-3 25.499433333333332 22.881149999999998 27.9927 ZT4-7 32.65145 32.65145 32.65145 ZT8-11 28.113599999999998 28.113599999999998 28.113599999999998 ZT12-15 25.956675 22.57 29.34335 ZT16-19 26.55765 26.55765 26.55765 ZT20-23 31.9772 31.9772 31.9772