condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.3924255 0.3924255 0.3924255 ZT12-15 0.21693525 0.0 0.4338705 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0