condition mean min max ZT0-3 64.2687 64.2687 64.2687 ZT4-7 107.57929999999999 107.57929999999999 107.57929999999999 ZT8-11 379.779 379.779 379.779 ZT12-15 561.64 561.64 561.64 ZT16-19 122.3635 122.3635 122.3635 ZT20-23 55.7333 55.7333 55.7333