condition mean min max ZT0-3 0.13504404616666665 0.0 0.2700880923333333 ZT4-7 0.15250345316666666 0.0 0.3050069063333333 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0