The moderator tools shows something like:
(This is the current monthly stats on Code Review)
However, I have yet to see the "seconds" value showing anything else than "0 seconds", which indicates that the system doesn't take the seconds into account.
I believe it is misleading to always show 0 seconds when the system doesn't seem to calculate the average handling time including seconds.
I suggest to either start to calculate the average handling time with seconds included, or simply drop the "0 seconds" text completely.