condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 1.6755849999999999 1.6755849999999999 1.6755849999999999 ZT8-11 0.596198 0.596198 0.596198 ZT12-15 0.1282265 0.1282265 0.1282265 ZT16-19 0.337849 0.337849 0.337849 ZT20-23 0.1675045 0.1675045 0.1675045