condition mean min max ZT0-3 36.605139190833334 34.37677044666667 38.833507935 ZT4-7 43.518614395 34.69293952 52.34428927 ZT8-11 40.14951057333333 39.58975017666667 40.70927097 ZT12-15 59.135850575 52.27404869 65.99765246 ZT16-19 73.369869835 70.75744371 75.98229596 ZT20-23 106.81996952833333 102.92352995333333 110.71640910333333