... formula^5.1

This formula was taken from the uv-vis.txt file which accompanies the CPFM data from the ASHOE/MAESA campaign on the NASA ftp server. The value of 4.1$^{\circ }$ is related to the angle between the diffuser normal and the vertical which was modified in subsequent campaigns (C.T. McElroy, 1998, personal communication). See Section 6.5.3 for further information.

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... is^11.1

As mentioned in Section 3.2, the value of 4.1$^{\circ }$ may not be correct. However, as the calibration correction term, $\Delta{\rm EA}$, is a constant, this introduces no further complications as any error in $4.1^{\circ}$ is absorbed into $\Delta{\rm EA}$. The correct formula will be used for journal publication.

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