condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.278632895 0.0 0.55726579 ZT8-11 0.0 0.0 0.0 ZT12-15 0.039582964 0.0 0.079165928 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0