condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.2159895 0.2159895 0.2159895 ZT8-11 13.795455 13.795455 13.795455 ZT12-15 0.88314375 0.0 1.7662875 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0