condition mean min max ZT0-3 0.0174692 0.0 0.0349384 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0692255 0.0692255 0.0692255 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0