Figure 7.
The image presents three histograms labelled A, B, and C, each plotting frequency on the vertical axis against temperature difference in degrees Celsius on the horizontal axis. In panel A, most values cluster below about 5 degrees Celsius, with frequencies decreasing steadily as the temperature difference increases and a long tail extending beyond 30 degrees Celsius. Panel B shows a similar right skew, with the highest frequencies below about 3 degrees Celsius and a shorter tail extending to around 18 degrees Celsius. Panel C is more strongly concentrated near zero, with very high frequencies below about 1 degree Celsius and only sparse values at larger temperature differences extending beyond 30 degrees Celsius.Temperature features of the NDB girder: distribution of the maximum temperature difference for (a) the top chord, (b) the web and (c) the bottom chord