condition mean min max ZT0-3 95.877274195 87.37736899999999 104.37717939000001 ZT4-7 38.6306798075 30.423188915 46.8381707 ZT8-11 37.4040266725 24.896389075 49.91166427 ZT12-15 55.634202815 55.385012360000005 55.88339327 ZT16-19 59.863844015000005 50.440787625 69.28690040500001 ZT20-23 95.3762970925 92.20243805999999 98.550156125