Doh! There is a logical explanation for this...

The data was extracted from the production system, following data processing. The raw data is generated every 30 mins at 20 and 50 mins past the hour. The values on the hour are averages calculated from the previous and following values.

R.

--

Robin Bowes | http://robinbowes.com

In reply to Re: Re: Re: Re: Data structure advice by robinbowes
in thread Data structure advice by robinbowes

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