How do I access individual table cells in a table.read() in R?

Once you have read data into R using table.read() as described here, you can also access each of the cells in the 9 element grid of the 3 columns X 3 rows by providing row and column numbers.

You defined the table as shown here:

You can access row1, column 1 using this code:
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> df[1, "Col1"]
[1] A
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Using code similar to the above you can access each element providing row number and column number as shown.

df[1, Col1]   df[1, "Col2"]   df[1, "Col3"]
df[2, Col1]   df[2, "Col2"]   df[2, "Col3"]
df[3, Col1]   df[3, "Col2"]   df[3, "Col3"]