condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.00964695 0.00964695 0.00964695 ZT8-11 0.0105496 0.0105496 0.0105496 ZT12-15 0.0 0.0 0.0 ZT16-19 0.016938750000000002 0.016938750000000002 0.016938750000000002 ZT20-23 0.0 0.0 0.0