condition mean min max ZT0-3 0.070001975 0.06938045 0.0706235 ZT4-7 0.0478878 0.0478878 0.0478878 ZT8-11 0.02392075 0.02392075 0.02392075 ZT12-15 0 0 0 ZT16-19 0.0462496 0.0462496 0.0462496 ZT20-23 0.04648255 0.04648255 0.04648255