I humbly submit that the "array" definition and subsequent code will never do what is desired:

my @wtodays=
'cOne cTwo   cThree 13 sec  cFour           
cOne cTwo   cThree 11 sec  cFour 
cOne cTwo   cThree 1 min 2 sec  cFour 
cOne cTwo   cThree 13 sec  cFour'; 
 
for ( @wtodays )
{
$table->addRow(split(/\s+/, "$_\n"));
}
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The array is being assigned a single string constant as if it was a scalar. The data in the array must first be organized properly before any meaningful manipulations can be done with it. For example:

my @wtodays = (
'cOne cTwo   cThree 13 sec  cFour'.           
'cOne cTwo   cThree 11 sec  cFour', 
'cOne cTwo   cThree 1 min 2 sec  cFour', 
'cOne cTwo   cThree 13 sec  cFour',
); 
 
for ( @wtodays )
{
    # do whatever text processing you need on a single row
}
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And yes, if there are tabs between the column data, and spaces only occur in the column values, then the split becomes trivial once the array is properly defined.

Update: grammar correction in previous paragraph.