condition mean min max ZT0-3 0.16365833333333332 0.0 0.490975 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.20787175 0.0 0.4157435 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0