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Fig. 1 Glory for monodisperse drops 
Fig. 2 Glory for disperse drops (5% SD) 
Raymond Lee used "Lee diagrams" to examine the behaviour of primary and secondary rainbows. MiePlot allows users to generate Lee diagrams for other scattering angles, such as 170°  180° to permit investigation of the glory, as shown in Fig. 1.
Fig. 1 is based on scattering calculations for 200 values of radius r between 5 µm and 20 µm, using the "High" option for the number of wavelengths (between 500 and 1,000 wavelengths). It shows that the glory consists of circular rings around the antisolar point.
The fine vertical stripes in Fig. 1 indicate significant variations between "adjacent" values of radius. Fig. 2 shows that these stripes disappear when the diagram is recalculated assuming that the drop sizes have a LogNormal distribution with a standard deviation of 5%.
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