condition mean min max ZT0-3 0.02406685 0.0 0.0481337 ZT4-7 0.0491106 0.0491106 0.0491106 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0