To show the status inline within a notebook (and not a separate window), first trigger loading the parallel tools:

    Parallelize;

The evaluate

    Parallel`Developer`KernelStatus[]

If you need to know how each column in this table is computed, take a look at

    <<GeneralUtilities`

    PrintDefinitions["Parallel`Status`Private`remoteStatus"]

It is in fact [`TimeUsed`](http://reference.wolfram.com/language/ref/TimeUsed.html) that's being reported.

Spelunking reference:

 * ``NotebookOpen@FindFile["Parallel`Status`"]``