condition mean min max ZT0-3 143.5 143.5 143.5 ZT4-7 140.7 140.7 140.7 ZT8-11 148.45 148.45 148.45 ZT12-15 203.05 203.05 203.05 ZT16-19 170.95 170.95 170.95 ZT20-23 176.85000000000002 176.85000000000002 176.85000000000002