Cosmological constraints on the flat ΛCDM model from the quasar sample without and with different systematical uncertainties: sys1 denotes the systematics with l = 11.03 ± 0.25 pc, β = 0.00 ± 0.05, and n = 0.00 ± 0.05, while sys2 represents the systematics with l = 11.03 ± 0.25 pc, β = 0.00 ± 0.10, and n = 0.00 ± 0.10.
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