There are several ways to access data in MATLAB table: https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-table.html. Two most commonly used are
1) Using variable name,
T.Var2(2) % access 2nd element in column Var2
T.Var2(5) = T.Var3(4); % assign 4th entry in column 3 to 5th entry in column 2.
2) Using brace indexing.
T{2,2} % access 2nd element in 2nd column
T{5,2) = T.{4,3}; % assign 4th entry in column 3 to 5th entry in column 2.
