condition mean min max ZT0-3 175.546138 175.546138 175.546138 ZT4-7 178.83257650000002 178.83257650000002 178.83257650000002 ZT8-11 111.29010500000001 111.29010500000001 111.29010500000001 ZT12-15 149.5433765 149.5433765 149.5433765 ZT16-19 118.5610475 118.5610475 118.5610475 ZT20-23 135.93877550000002 135.93877550000002 135.93877550000002