condition mean min max ZT0-3 0.8089609999999999 0.57203 1.0458919999999998 ZT4-7 0.330113 0.330113 0.330113 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.161027 0.161027 0.161027 ZT20-23 0.645402 0.645402 0.645402