condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.06437235 0.06437235 0.06437235 ZT8-11 0.0 0.0 0.0 ZT12-15 0.04493655 0.04493655 0.04493655 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0