condition mean min max ZT0-3 0.009797433333333333 0.0 0.019594866666666665 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0044682125 0.0 0.008936425 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0