Fig. 7.

The dotted and solid traces are the same as in Fig 6. The dashed trace shows the calculated cross section with the detector acceptance angle set to zero. The dashed curve for the 1.5 µm data differs from the solid curve by at most 16 %. In contrast the difference for the 4.5µm microspheres averages to about 60 %. Clearly such a large difference is more than a correction and points to the need for an improved analysis of the instrument collection efficiency.