condition mean min max ZT0-3 158.10000000000002 158.10000000000002 158.10000000000002 ZT4-7 66.9 66.9 66.9 ZT8-11 109.94999999999999 109.94999999999999 109.94999999999999 ZT12-15 63.7 63.7 63.7 ZT16-19 83.85 83.85 83.85 ZT20-23 128.0 128.0 128.0