[daip] SNSMO

[Amy Mioduszewski]

Hi Lynn,

Sorry it took so long to respond but Eric was away last week and I've 
been swamped.

I an looking at your problem.  I think there is a misconception of how 
smoothing works.  Eric can correct me if I am wrong (he'll be back 
Sunday), but I think what happens with boxcar smoothing is each point is 
replaced by the average of the data +-0.5*smoothing time.  So the reason 
that the 20 minute smoothing time replaced everything with a single 
value is that +-10 minutes of each data point is the same data, i.e., 
your data was spaced in such a way that the average was always based on 
the same points for each.  Now, the 24hr smoothing time replaced 
everything with the same vale for a similar reason, each data point was 
replaced by an average of all the data.  But for a 6hr smoothing time 
each point is going to have a different set of data going into it's 
average, and I think your data is spaced in such a way that this can be 
very different for each point.  SNSMO might still be doing something 
odd, but your suggestion that all the rates should have the same value 
with a 6hr smoothing time is not correct.

Cheers,

Amy