condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.010580018166666668 0.0 0.021160036333333337 ZT8-11 0.0 0.0 0.0 ZT12-15 0.044746697499999995 0.0 0.08949339499999999 ZT16-19 0.0 0.0 0.0 ZT20-23 0.011777719833333334 0.0 0.023555439666666667