yays per min?

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Hey GUYS ;

started using cudaminer manager and noticed at the bottom an average of 2 yays/min is that good or bad. What is a good or bad amount?

This average is when I was mining tag coin my hashrate is 620khash/sec.
I usually mine ltc, ultra, mint, vert.

am assuming it differs between coins and pools but what are your thoughts and observations?