Somewhat belatedly, here are the July 2010 Arbitrons, for all you charts-'n'-graphs geeks.

What will you discover in the chart below? Country station K102 won the monthlies for the second month in a row, WCCO-AM popped up after a rough spring, and right-wing yakker The Patriot had its best month since personal people meters replaced the old diary system.

Remember, these numbers represent the broadest audience measure, persons 6 or older, 6 a.m. to midnight. Stations make money off smaller demographic slices. Also, one-month variations aren't that big a deal; look for trends.

(Oh, and I have no idea why there are three stations in red, but once I discovered it, I wasn't remaking the graphic.)

Here's a graph looking at the race among the perennial top four, all music stations. KQ's slide continues for the fourth month in a row; the rock station is down almost two full share points in a year. KS95 isn't doing leagues better, but KDWB is up almost as much as the other two are down.

Here are the biggest talk stations. MPR News (a.k.a. KNOW) has shown a steady erosion this year, but it's the station that depends on ratings the least. We'll see what the fall campaign holds for the civic-minded network.

Other thoughts:

The competition between sports stations 1500 ESPN and KFAN has settled into statsis; though KFAN looks down, these numbers will flip once the Vikes take charge of the sports calendar. (You can see a fuller discussion of the battle here.)

The Patriot and its left-wing counterpart, AM950, were within shouting distance of each other until May, when the Patriot surged ahead. The July gap is the biggest yet. Does it indicate a political "enthusiasm gap?" Could be that the Patriot is drawing a bit away from bigger conservative station KTLK. Overall, the right-ward share of the talk audience is about where it was a year ago.