Minitab Portable Worksheet P1.1 2001 3 2 Release 9.1 . % 3 1 8 -10 size (mm) . 2 to 8 8 to 16 16 to 32 32 to 64 64-128 128 to 256 256 to 512 . >512 . % 3 2 8 0 rural rel freq . 1.100000000E-01 1.900000000E-01 1.200000000E-01 1.700000000E-01 2.400000000E-01 1.400000000E-01 2.000000000E-02 2.000000000E-02 . % 3 3 8 0 urban rel freq . 1.000000000E-02 1.100000000E-01 1.800000000E-01 2.500000000E-01 3.300000000E-01 1.100000000E-01 1.000000000E-02 0.000000000E+00 . % 100 0 0 0 . % 101 0 0 0 . % 102 0 0 0 .