condition mean min max ZT0-3 0.814072 0.724299 0.8621890000000001 ZT4-7 0.4691775 0.4691775 0.4691775 ZT8-11 0.9649209999999999 0.9649209999999999 0.9649209999999999 ZT12-15 0.58561825 0.191166 0.9800705000000001 ZT16-19 0.4561355 0.4561355 0.4561355 ZT20-23 0.7730809999999999 0.7730809999999999 0.7730809999999999