condition mean min max ZT0-3 0.0261015 0.0 0.0783045 ZT4-7 0.23546499999999998 0.23546499999999998 0.23546499999999998 ZT8-11 0.0 0.0 0.0 ZT12-15 0.16883175 0.089225 0.2484385 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0