Fig. 8

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The localisation parameter, λ, in degrees, as a function of latitude and solar cycle phase. Note the colour bar has been saturated at 10° to highlight the variations in smaller values. Top: the full latitude range. Bottom: a detail of ±10°. Columns, from left to right, show speed error tolerances of VTOL = 20, 50, and 100 km s−1, respectively.

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