<font size=2 face="sans-serif">Alex/Simon, thanks for your input. It
turns out my data had mixed intervals so I had to read up on steps and
heartbeats. I am in the process of re-entering 5 years of data.</font>
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<br><font size=2 face="sans-serif">I suspect that at least for EST the
daily averages based on GMT will be close enough for my purposes.
</font>
<br><font size=2 face="sans-serif"> Regards,
Norbert</font>
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