condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.129016 0.129016 0.129016 ZT12-15 0.13481549999999998 0.0 0.26963099999999995 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0