Figure 4.
The image shows a box plot chart illustrating the diameters measured in micrometres for different treatment types. The vertical axis is labelled Diameter: m and ranges from ten to three hundred sixty micrometres, while the horizontal axis is labelled Treatment type and includes categories U, A 4, A 8, H 4, H 8, H 4 B, and H 8 B. Each box plot represents the interquartile range and median for the specific treatment type, with vertical lines indicating the range of the data. The chart provides a visual comparison of the diameters across the different treatments without revealing specific numerical values or trends.Box and whisker plots for the measured fibres’ cross-sectional diameter