condition mean min max ZT0-3 0.023437933333333334 0.023437933333333334 0.023437933333333334 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.03047405 0.03047405 0.03047405 ZT16-19 0.012041999999999999 0.012041999999999999 0.012041999999999999 ZT20-23 0.0 0.0 0.0