Figure 9.
The histogram presents the frequency distribution of temperature difference values on the horizontal axis from approximately 0 to 4 degrees Celsius, with frequency on the vertical axis increasing to about 270000. The distribution shows very low frequencies near 0, rising rapidly to high frequencies between about 0.4 and 2.5, with several local peaks across this range. Frequencies then decrease steadily beyond about 2.5, forming a long right tail with sparse occurrences up to around 4.0.Temperature features of the QC tower section