If the ratings had come from a stream as opposed to over the air, it would have been noted as the "station name + stream" such as occurred with the "WMGQ-FM Stream" that registered a 0.1 share and the "WKXW-FM Stream" that came in with a 0.5 share on the same report.
What happened is that a panelist (or possibly a family of panelists) who resides in the NJ area likely has spent some time in either San Diego North County or southern Orange County in California. Ratings results (whatever and wherever the stations may be) always go to the "home market" in which the panelist permanently resides.
KWIZ-FM-96.7 Santa Ana, CA - La Rockola - Regional Mexican(?) / listed as Spanish Variety on Arbitron's listings
XHTY-FM-99.7 Tijuana, Baja California, Mexico - La Invasora - Regional Mexican
Turns out XHTY-FM had a 0.5 share in the previous December 2011 report, so it's evident that the panelist (or group of panelists) has spent significant time in that area from between the Dec. '11/Holiday '11 survey dates of 11/10/11-1/4/12 - or at the very least was a loyal listener to the stations while there.
I'd imagine if a panelist (or family) relocates on a semi-permanent or permanent basis, Arbitron would either transfer them from one survey area to the other or have them removed entirely.
Clarification welcomed.