condition mean min max ZT0-3 1.168684 1.168684 1.168684 ZT4-7 0.069788 0.069788 0.069788 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.061709 0.061709 0.061709 ZT20-23 0.6995045 0.6995045 0.6995045