condition mean min max ZT0-3 79.57119999999999 77.23089999999999 81.91149999999999 ZT4-7 57.76555 57.76555 57.76555 ZT8-11 57.7713 57.7713 57.7713 ZT12-15 0 0 0 ZT16-19 85.35745 85.35745 85.35745 ZT20-23 92.66265 92.66265 92.66265