How much would a good player's hourly rate be at $2-$4?

I've heard of the classic "one big bet per hour." Although I know people that make far more and far less than this amount.

How much per hour should an above average, tight player make at $2-$4 limit hold'em online?

I am just trying to gauge how much a good player is expected to make online. I'm sure it varies greatly. If anyone has put in hours at $3-$6, $4-$8, or $5-$10 limit hold'em, it would be greatly appreciated if you'd post your hourly rates too. Thank you.