condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.06214483333333334 0.0 0.12428966666666667 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0