condition mean min max ZT0-3 0.077178 0.0 0.154356 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0304067 0.0304067 0.0304067 ZT20-23 0.2141383 0.2141383 0.2141383