condition mean min max ZT0-3 6.33189 6.33189 6.33189 ZT4-7 2.296145 2.296145 2.296145 ZT8-11 3.82819 3.82819 3.82819 ZT12-15 19.4507 19.4507 19.4507 ZT16-19 31.457 31.457 31.457 ZT20-23 14.93485 14.93485 14.93485