What's the seeing at your observatory?

One of the things we can't control is the weather, and when we do have a clear, transparent night, seeing moves to the top of the list. So what is the average seeing at your permanent observatory? Are there significant seasonal variations?

Here is the Pickering scale (1-10) for reference:
http://www.damianpeach.com/pickering.htm

I live in a valley about 20 miles from the Colorado/Utah border and the average seeing here is 3-4 on the Pickering scale.

Seeing is usually 7+ in South Florida... 8)

For my location in Northern Virginia: average is 5, tops is 7. I have never seen 8, 9 ,10 in the 6 years since the observatory opened. I think the seeing is getting worse over the years. Transparency certainly is getting worse.

Cheers anyway,