condition mean min max ZT0-3 0.005015125 0.005015125 0.005015125 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0029438166666666665 0.0029438166666666665 0.0029438166666666665 ZT12-15 0.014670999999999998 0.014670999999999998 0.014670999999999998 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0