condition mean min max ZT0-3 99.35 99.35 99.35 ZT4-7 55.6 55.6 55.6 ZT8-11 50.4 50.4 50.4 ZT12-15 119.35000000000001 119.35000000000001 119.35000000000001 ZT16-19 122.05000000000001 122.05000000000001 122.05000000000001 ZT20-23 127.25 127.25 127.25