condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01364655 0.01364655 0.01364655 ZT8-11 0.00803645 0.00803645 0.00803645 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0090992 0.0090992 0.0090992 ZT20-23 0.0 0.0 0.0