condition mean min max ZT0-3 0.09405930000000001 0.09405930000000001 0.09405930000000001 ZT4-7 0.026221500000000002 0.026221500000000002 0.026221500000000002 ZT8-11 0.054516949999999995 0.054516949999999995 0.054516949999999995 ZT12-15 0.06635970000000001 0.06635970000000001 0.06635970000000001 ZT16-19 0.0839171 0.0839171 0.0839171 ZT20-23 0.06050145 0.06050145 0.06050145