condition mean min max ZT0-3 5.3418725 4.77792 5.905825 ZT4-7 0.58819 0.58819 0.58819 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.592505 0.592505 0.592505