<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Odd rollup behaviour]]></title><description><![CDATA[<p dir="auto">Hey, I was just goofing around with some excel reports and noticed a very odd rollup behaviour. I had a point which kept track of hourly temperature data and which I accidentally deleted. To remedy this I went and downloaded daily mean temperatures and loaded them in to the history, so now said point has one entry each day at 17:00. I did this because in future we want to keep using this point, hourly data, and the report will give me an average rollup on a per day basis. To make sure that the average of a single point is calculated correctly I ran a little test excel report. This is where things didn't work quite as expected. I admit this is an oddball case but is there an explanation?</p>
<p dir="auto">Left column below is the actual raw data and the right column is the daily average I get form the system.</p>
<p dir="auto"><img src="https://camo.nodebb.org/d2f4ab212f6a21e03c97a50100976d40fac77676?url=https%3A%2F%2Fi.imgur.com%2F5PjYySG.png" alt="0_1518129980931_d72fcf65-b419-48e7-beca-f3a7ee932eb7-image.png" class=" img-fluid img-markdown" /></p>
]]></description><link>https://forum.mango-os.com/topic/3271/odd-rollup-behaviour</link><generator>RSS for Node</generator><lastBuildDate>Fri, 17 Apr 2026 06:05:30 GMT</lastBuildDate><atom:link href="https://forum.mango-os.com/topic/3271.rss" rel="self" type="application/rss+xml"/><pubDate>Thu, 08 Feb 2018 22:47:20 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to Odd rollup behaviour on Thu, 08 Feb 2018 22:54:31 GMT]]></title><description><![CDATA[<p dir="auto">FYI I added the exact same values a second time to the points history at a different time and now the averages are spot on.</p>
]]></description><link>https://forum.mango-os.com/post/17277</link><guid isPermaLink="true">https://forum.mango-os.com/post/17277</guid><dc:creator><![CDATA[psysak]]></dc:creator><pubDate>Thu, 08 Feb 2018 22:54:31 GMT</pubDate></item></channel></rss>