condition mean min max ZT0-3 115.6 115.6 115.6 ZT4-7 22.3 22.3 22.3 ZT8-11 61.1 61.1 61.1 ZT12-15 115.94999999999999 115.94999999999999 115.94999999999999 ZT16-19 67.0 67.0 67.0 ZT20-23 135.2 135.2 135.2