More Detail

There were requests from the peanut gallery for more detail in the recent weekly-average-temp graphs.  I suspect this was just designed to push me over the edge, but I’ve complied anyway.  This took some doing– what with two months of temperature data, taken at 5-minute intervals.  But here’s what I’ve been able to produce:

Graph #1:  This shows weekly average living room / kitchen temps (blue line), along with associated weekly maximum and minimum temps (green dots).  Unfortunately I hadn’t saved the full data for the first week, so no min/max there.

Graph #2:  This again shows weekly averages (blue line), but now with orange arrows representing the range of +/- one standard deviation.  In other words, the orange-shaded areas show a range covering about 68% of the time that week (alternatively, the temp was below the top of the bar about 84% of the time.)

Now, lastly, I wondered whether considering standard deviations was legitimate in the first place– in other words, whether our temperatures fall out into a bell curve, or something less regular.  So, I put together about 11,000 temperature readings from 10/30 – 12/4, had Excel count them, then compiled them into this masterpiece.  Along the x-axis, 2º increments. On the y-axis, hours we spent in that 2º range, over the six-week spread: 

It is, indeed, a fairly nice bell curve.  What’s interesting, and I might have predicted, is the difference in the shape of the tails.  Our high temps tend to be very fleeting, hit just as the wood stove maxes out, then immediately start to dive.  Our lows, on the other hand, tend to linger a bit longer, coming over night and hovering until something starts to warm the house.


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8 Responses to “More Detail”

  1. John Says:


    More work for you: plot the weekly outdoor highs and lows too.

    • Rising Tide Says:

      I’ve been asking coldhousejournal for an outdoor temperature overlay for weeks. I shall ply him with highly alcoholic egg nog next time I see him and see if I can’t convince him on this topic.

  2. Val Says:

    Wow!!! What detail and options!!! I bet all that thinking warmed your body up from all those brain cells working!!!

  3. Rising Tide Says:

    That bell curve chart is really quite interesting. Cool stuff!

  4. Val Says:

    I use iGoogle to check what the temp is in MA and ME. Its Free! It is updated often so as the daytime temp rises its reflected there.
    The only issue is they have a few locations and my house in ME is in a valley, the temp tends to be as much as 10 degrees lower than the location in the same town. You can look and see a map to show exactly where the temp. information is from. I use it as my home page with Boston, my home town in MA and home town in ME.
    Current Temp, Wind, Humidity and Weather as well as few day projected highs and lows and weather for all three locations.
    Of course having your own that can connect to your computer would be better so you can do a fancy graph!

  5. John Says:

    From your first plot, it looks like the average house temp is much more sensitive to the weekly low than the high. Plotting the former against the latter two would reveal that.

    Oh, and I think your increased ad revenues from all the eyeballs tracking your graphs should justify an indoor/outdoor data logger. 😉

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