condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.017155475 0.017155475 0.017155475 ZT8-11 0.007535025 0.007535025 0.007535025 ZT12-15 0.01797545 0.01797545 0.01797545 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0