> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/rep.html'>rep</a></span><span class='op'>(</span><span class='st'>""</span>, <span class='fl'>4</span><span class='op'>)</span>, <span class='st'>"2016-01-01"</span><span class='op'>)</span>,
                 AESTDTC <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/rep.html'>rep</a></span><span class='op'>(</span><span class='st'>"2016-01-