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Table 2 of Planck 2018 results

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Why are these three values different? In particular, why is the EE value so much closer to the local universe value, and have so much higher error?

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The value of the H0 parameter is calculated along with the four Omega parameters to arrive at the best fit for a Friedmann model for a particular collection of astronomical data. I do not know the specific math used to determine best bit, so I cannot provide any additional details.

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