condition mean min max ZT0-3 38.676050000000004 38.676050000000004 38.676050000000004 ZT4-7 17.198999999999998 17.198999999999998 17.198999999999998 ZT8-11 16.34555 16.34555 16.34555 ZT12-15 30.5453 30.5453 30.5453 ZT16-19 86.40174999999999 86.40174999999999 86.40174999999999 ZT20-23 62.959900000000005 62.959900000000005 62.959900000000005