condition mean min max ZT0-3 74.40440449249999 56.370299364999994 92.43850962 ZT4-7 21.5103475175 20.283215505 22.73747953 ZT8-11 26.53140871 22.554048105 30.508769315000002 ZT12-15 21.587713305 19.62445291 23.5509737 ZT16-19 24.944541094999998 21.69378348 28.19529871 ZT20-23 31.486575925 29.475853405000002 33.497298445