condition mean min max ZT0-3 118.5 118.5 118.5 ZT4-7 198.6 198.6 198.6 ZT8-11 160.3 160.3 160.3 ZT12-15 115.5 115.5 115.5 ZT16-19 98.1 98.1 98.1 ZT20-23 103.4 103.4 103.4