condition mean min max ZT0-3 94.6 94.6 94.6 ZT4-7 122.4 122.4 122.4 ZT8-11 118.95 118.95 118.95 ZT12-15 100.69999999999999 100.69999999999999 100.69999999999999 ZT16-19 85.75 85.75 85.75 ZT20-23 101.15 101.15 101.15