condition mean min max ZT0-3 88.53935 88.53935 88.53935 ZT4-7 72.6678535 72.6678535 72.6678535 ZT8-11 63.0296625 63.0296625 63.0296625 ZT12-15 83.597098 83.597098 83.597098 ZT16-19 45.490526 45.490526 45.490526 ZT20-23 109.9870585 109.9870585 109.9870585