condition mean min max ZT0-3 0.017587652250000002 0.0 0.035175304500000004 ZT4-7 0.0192599295 0.0 0.038519859 ZT8-11 0.0 0.0 0.0 ZT12-15 0.049408919999999995 0.0 0.09881783999999999 ZT16-19 0.0 0.0 0.0 ZT20-23 0.06238610433333334 0.021402436 0.10336977266666668