condition mean min max ZT0-3 127.14999999999999 127.14999999999999 127.14999999999999 ZT4-7 14.9 14.9 14.9 ZT8-11 74.15 74.15 74.15 ZT12-15 96.65 96.65 96.65 ZT16-19 41.15 41.15 41.15 ZT20-23 18.7 18.7 18.7