Gregor Mendel's original publications give a summary of his experiments.
According to my research to date, many, if not most, of his original
notebooks were destroyed after his death.

My question: is Mendel's original data available on his experiments?
Were his notebooks translated and made available? If not, has any
modern researcher replicated his experiments exactly, and is that data
available?

I have searched all sites on Mendel listed in Google and cannot find
the original data, or a modern data set replicating exactly that work.
Please only
refer to a Mendel site or book if it contains this specific answer.

I have not found Mendel's data, but on
http://www.gutenberg.net/etext05/spvrt10.txt there are a few data by
Hugo de Vries, the so-called "rediscoverer of Mendel".