condition mean min max ZT0-3 0.0312201 0.0312201 0.0312201 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0119594 0.0119594 0.0119594 ZT20-23 0.0118156 0.0118156 0.0118156