Marginalised 1σ errors on cosmological parameters, relative to their corresponding fiducial values for a flat (upper panels) and non-flat (lower panels) spatial geometry, in the (w0, wa) cosmology. Left (right) panels: pessimistic (optimistic) settings, as described in the text. The histogram refers to different observational probes. For both a spatially flat and a spatially non-flat cosmology, we show results for GCs, WL, GCs+WL, GCs+WL+GCph, and GCs+WL+GCph+XC. For wa we show the absolute error, since a relative error is not possible for a fiducial value of 0.
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