condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.1121778 0.1121778 0.1121778 ZT8-11 0.0381803 0.0381803 0.0381803 ZT12-15 0 0 0 ZT16-19 0.0368371 0.0368371 0.0368371 ZT20-23 0.0372515 0.0372515 0.0372515