condition mean min max ZT0-3 0.03454148425 0.029876775499999998 0.039206193 ZT4-7 0.03032300525 0.0109172505 0.049728760000000004 ZT8-11 0.05277417225 0.0512300715 0.054318273 ZT12-15 0.021373407 0.0094372805 0.0333095335 ZT16-19 0.0639047375 0.056815103 0.070994372 ZT20-23 0.08087998974999999 0.0547894985 0.10697048099999999