condition mean min max ZT0-3 100.87385 100.87385 100.87385 ZT4-7 114.27449999999999 114.27449999999999 114.27449999999999 ZT8-11 83.25945 83.25945 83.25945 ZT12-15 67.6226 67.6226 67.6226 ZT16-19 67.12360000000001 67.12360000000001 67.12360000000001 ZT20-23 82.1086 82.1086 82.1086