condition mean min max ZT0-3 0.3681325 0.29021 0.446055 ZT4-7 0.430257 0.430257 0.430257 ZT8-11 1.268975 1.268975 1.268975 ZT12-15 0 0 0 ZT16-19 0.809803 0.809803 0.809803 ZT20-23 0.6760775 0.6760775 0.6760775