condition mean min max ZT0-3 104.77052 104.77052 104.77052 ZT4-7 106.735873 106.735873 106.735873 ZT8-11 114.87331950000001 114.87331950000001 114.87331950000001 ZT12-15 96.5340975 96.5340975 96.5340975 ZT16-19 124.61667299999999 124.61667299999999 124.61667299999999 ZT20-23 115.2615515 115.2615515 115.2615515