condition mean min max ZT0-3 136.45 136.45 136.45 ZT4-7 59.4 59.4 59.4 ZT8-11 57.75 57.75 57.75 ZT12-15 83.2 83.2 83.2 ZT16-19 82.25 82.25 82.25 ZT20-23 106.2 106.2 106.2