condition mean min max ZT0-3 0.134138044 0.0 0.268276088 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.02589175375 0.0 0.0517835075 ZT16-19 0.036453927250000004 0.0 0.07290785450000001 ZT20-23 0.148503589 0.133502448 0.16350473