condition mean min max ZT0-3 0.00594295 0.0 0.01782885 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.009268875 0.0 0.01853775 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0