condition mean min max ZT0-3 124.94999999999999 124.94999999999999 124.94999999999999 ZT4-7 57.8 57.8 57.8 ZT8-11 55.5 55.5 55.5 ZT12-15 61.8 61.8 61.8 ZT16-19 61.050000000000004 61.050000000000004 61.050000000000004 ZT20-23 109.1 109.1 109.1