condition mean min max ZT0-3 0.038926249999999996 0.038926249999999996 0.038926249999999996 ZT4-7 0.0247638 0.0247638 0.0247638 ZT8-11 0.02006365 0.02006365 0.02006365 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0217273 0.0217273 0.0217273 ZT20-23 0.06401994999999999 0.06401994999999999 0.06401994999999999