condition mean min max ZT0-3 0.5997747499999999 0.570035 0.6295145 ZT4-7 0.5035540000000001 0.5035540000000001 0.5035540000000001 ZT8-11 0.0626375 0.0626375 0.0626375 ZT12-15 0 0 0 ZT16-19 0.6849689999999999 0.6849689999999999 0.6849689999999999 ZT20-23 0.7508825 0.7508825 0.7508825