condition mean min max ZT0-3 0.7074003333333333 0.226241 1.0590614999999999 ZT4-7 0.0 0.0 0.0 ZT8-11 0.4146415 0.4146415 0.4146415 ZT12-15 1.919758 1.674401 2.165115 ZT16-19 3.172155 3.172155 3.172155 ZT20-23 1.1090484999999999 1.1090484999999999 1.1090484999999999