condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.2702795 0.2702795 0.2702795 ZT8-11 0.0 0.0 0.0 ZT12-15 0.133722 0.133722 0.133722 ZT16-19 0.3506385 0.3506385 0.3506385 ZT20-23 0.2907945 0.2907945 0.2907945