condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 1.592635 1.592635 1.592635 ZT12-15 0 0 0 ZT16-19 1.542675 1.542675 1.542675 ZT20-23 0.0 0.0 0.0