Today we've had several "Lost Data" messages from the GPS at sage. A plot of
the raw data indicate that we lost at least one sample from this sensor every
hour, and John's config is only reporting a sample every minute. (In contrast,
lake's GPS has only lost one sample in the last 8 hours.)
John speculates that this GPS is having problems locking onto the satellites,
is reporting that its data may be bad, and EVE is rejecting these messages.
I just went to sage for an inspection of the GPS. All looked okay, but I
cycled power on the GPS and rotated the antenna 90 degrees, so that the walk
there wasn't wasted. We'll have to see what happens.
(John has suggested using EVE_talk to this sensor to look for "A" or "Z?" as
the first character, but I think this would be hard for such an intermittent
problem.)