condition mean min max ZT0-3 126.9 126.9 126.9 ZT4-7 109.2 109.2 109.2 ZT8-11 221.3 221.3 221.3 ZT12-15 112.0 112.0 112.0 ZT16-19 159.5 159.5 159.5 ZT20-23 198.85000000000002 198.85000000000002 198.85000000000002