condition mean min max ZT0-3 33.35 33.35 33.35 ZT4-7 24.0 24.0 24.0 ZT8-11 5.300000000000001 5.300000000000001 5.300000000000001 ZT12-15 18.75 18.75 18.75 ZT16-19 8.95 8.95 8.95 ZT20-23 26.55 26.55 26.55