Mother Earth is the source of oil and gas, also.
Correct but the trend line needs to be based on measurements made with instruments of similar accuracy. If you look at the graph in the original post the difference between the high and low points of temperature is about 2 degrees. An error in reading the temperature buy even 0.2 degree is a 10 percent error. The people publishing this information need to be transparent and tell us the accuracy of their measurements (+ or - so many 0.1ths of a degree) so that an informed decision can be made.
When ever I make a measurement of anything (especially comparative measurements) I always use the same instrument to make the measurement. Whether that be a caliper, mil gauge or total station. Measuring material values versus measuring temperatures and distances are totally different. Temperatures, distances and other environmental and spacial measurements are totally dependent upon the accuracy of the instrument and the precision and training of the operator. Any one or a combination of errors can lead to false readings.
When looking at charts like this always look at the scale of the axes. You can emphasize a difference by adjusting the scale of the axes.
From Dave bakers YouTube channel
https://www.youtube.com/live/oP1Ozm3...8fjyuKKKEXFif_
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