condition mean min max ZT0-3 0.22957675 0.154308 0.3048455 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.30522950000000004 0.30522950000000004 0.30522950000000004