condition mean min max ZT0-3 78.05000000000001 78.05000000000001 78.05000000000001 ZT4-7 59.1 59.1 59.1 ZT8-11 112.15 112.15 112.15 ZT12-15 108.45 108.45 108.45 ZT16-19 104.25 104.25 104.25 ZT20-23 99.80000000000001 99.80000000000001 99.80000000000001