condition mean min max ZT0-3 0.053959288 0.0 0.107918576 ZT4-7 0.01091673 0.0 0.02183346 ZT8-11 0.0 0.0 0.0 ZT12-15 0.13899418916666667 0.075521799 0.20246657933333334 ZT16-19 0.010074712000000001 0.0 0.020149424000000003 ZT20-23 0.0 0.0 0.0