condition mean min max ZT0-3 140.59050000000002 133.816 147.365 ZT4-7 111.52855 111.52855 111.52855 ZT8-11 91.62915000000001 91.62915000000001 91.62915000000001 ZT12-15 0 0 0 ZT16-19 113.7165 113.7165 113.7165 ZT20-23 102.11205 102.11205 102.11205