condition mean min max ZT0-3 23.3 23.3 23.3 ZT4-7 85.7 85.7 85.7 ZT8-11 106.25 106.25 106.25 ZT12-15 95.69999999999999 95.69999999999999 95.69999999999999 ZT16-19 59.2 59.2 59.2 ZT20-23 71.5 71.5 71.5