condition mean min max ZT0-3 0.62864425 0.456047 0.8012414999999999 ZT4-7 0.46423899999999996 0.46423899999999996 0.46423899999999996 ZT8-11 0.550519 0.550519 0.550519 ZT12-15 0 0 0 ZT16-19 0.9152420000000001 0.9152420000000001 0.9152420000000001 ZT20-23 0.9571745 0.9571745 0.9571745