Fig. 6. Uncertainty budget on the night of 12 July 2017. The statistical uncertainty of the retrieval (blue), the Rayleigh-scatter cross section uncertainty at 308 nm (dashed line red), the Rayleigh-scatter cross section uncertainty at 289 nm (dashed line yellow), the ozone absorption cross section at 308 nm (dashed line purple), the ozone absorption cross section for the 289 nm channel (dashed line green), and the overlap function for the 289 nm channel (dashed line light blue) all contribute to the budget. The horizontal dashed line shows the height below which the retrieval is independent of the a priori profile.
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