Strange AP LUID Display

Last night when I was testing the performance of a new 27db grid reflector, I went up on the roof with my alignment headset and just monitored the output tone to determine if I could punch through some trees. Once the registration tone was heard, I held the position of the dish for a good three minutes, and we immediately killed the power. We did this so once we went inside we could remotely login to the AP and see the IDLE LUID statistics and compare them to other module on the roof attached to the standard Canopy reflector.

How is it possible that Average/Last RSSI, Jitter, and Power Level statistics for the NEW LUID have been changing over the past 24 hours, considering that the module has been IDLE since we killed the power? The statistics do not vary greatly, but have changed.


Thanks in advance,