Big jumps like KFOG's are often temporary. For a recent example of the PPM yo-yo factor, check out KMEL's last two months (6.3-5.2). KFOG's latest monthly basically brings them back to the range they usually inhabit which is the mid-to-high 2's. What's more important in measuring their health is their 25-54 ranking. Long climbs like the one seen on KNBR are usually tied to seasonal sports (SF Giants). The steady growth of KIOI likely shows the benefit of an improved morning show (currently #1 25-54) which, given their relative newness in the market, seems to have nailed a couple favorable meters. What's more telling in this recent survey is the steady share decline of KYLD which is below a 4 share again this month even though it usually has the biggest cume in the market. No doubt KMVQ's powerful performance is a factor here. What used to be a tenth of a share difference between the two is now almost a full share gap. And then there's the continued disappointing numbers put up at KSAN.