condition mean min max ZT0-3 136.95 136.95 136.95 ZT4-7 118.7 118.7 118.7 ZT8-11 129.05 129.05 129.05 ZT12-15 112.5 112.5 112.5 ZT16-19 104.8 104.8 104.8 ZT20-23 105.1 105.1 105.1