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[Mis]understanding graph data

Posted: Thu Dec 01, 2011 12:49 pm
by birdfeedr
meteohubgraphing.png
meteohubgraphing.png (110.69 KiB) Viewed 3234 times
The screenshot shows result and graph definition, except for what you cannot see. Graph definition also sets Time Frame to Last 420 Days.

I do not understand why the daily temperature plot in green could be higher than the min/max range in red. This seems to occur from about June through October. I do notice in colder months the green line tends to hug the bottom of the min/max, but in summer months it exceeds the top of the min/max.

Question: how is a day's worth of data calculated to yield the daily temperature value, and why would it be higher than the day's max value?

Another question: Is it possible within Meteohub to sample and graph a month this year and compare it to the same month last year? I think the answer is no. Exporting data and analysis offline is the way to go.

Re: [Mis]understanding graph data

Posted: Thu Dec 01, 2011 2:34 pm
by cgn
You have different y-axes for min/max (-20°F to 120°F) and daily (0°F to 90°F).
When you use the same y-axis for both, it should be right :wink:

Re: [Mis]understanding graph data

Posted: Thu Dec 01, 2011 7:50 pm
by wfpost
also skyewright has provided a trick to have same scales left and right using same sensors on left and right panel

Re: [Mis]understanding graph data

Posted: Fri Dec 02, 2011 1:01 pm
by birdfeedr
cgn wrote:You have different y-axes for min/max
Once it's pointed out, it's so obvious.

Thanks.