condition mean min max ZT0-3 0.026673916666666665 0.0 0.04186925 ZT4-7 0.0 0.0 0.0 ZT8-11 0.037178 0.037178 0.037178 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0365935 0.0365935 0.0365935 ZT20-23 0.0 0.0 0.0