condition mean min max ZT0-3 0.01947545 0.01947545 0.01947545 ZT4-7 0.0271054 0.0271054 0.0271054 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0355768 0.0355768 0.0355768 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0