condition mean min max ZT0-3 0.00806514025 0.0 0.0161302805 ZT4-7 0.0 0.0 0.0 ZT8-11 0.047194121000000006 0.0 0.09438824200000001 ZT12-15 0.04510668775 0.0182789565 0.071934419 ZT16-19 0.06826442875 0.041705020499999995 0.094823837 ZT20-23 0.17207181575 0.0285705945 0.315573037