condition mean min max ZT0-3 43.3813 42.94055 43.822050000000004 ZT4-7 37.64945 37.64945 37.64945 ZT8-11 19.227600000000002 19.227600000000002 19.227600000000002 ZT12-15 0 0 0 ZT16-19 20.8559 20.8559 20.8559 ZT20-23 75.53004999999999 75.53004999999999 75.53004999999999