condition mean min max ZT0-3 114.30000000000001 114.30000000000001 114.30000000000001 ZT4-7 85.7 85.7 85.7 ZT8-11 73.94999999999999 73.94999999999999 73.94999999999999 ZT12-15 81.4 81.4 81.4 ZT16-19 182.3 182.3 182.3 ZT20-23 108.45 108.45 108.45