condition mean min max ZT0-3 0.02736575 0.02736575 0.02736575 ZT4-7 0.0 0.0 0.0 ZT8-11 0.1043875 0.1043875 0.1043875 ZT12-15 0.0 0.0 0.0 ZT16-19 0.055468 0.055468 0.055468 ZT20-23 0.0 0.0 0.0