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The Hubble constant (H₀) tension between Type Ia supernovae (SNe Ia) and Planck measurements ranges from 4 to 6σ. To investigate his tension, we estimate H₀ in the ΛCDM and wCDM (cold dark matter) models by dividing the Pantheon sample, the largest compilation of SNe Ia, into 3, 4, 20, and 40 bins. We fit the extracted H₀ values with a function mimicking the redshift evolution: g(z)=(1+z)^alpha, where α indicates an evolutionary parameter. Results show a slowly decreasing trend, with α coefficients consistent with zero only from 1.2 to 2.0σ. Although the α coefficients are compatible with zero in 3σ, this however may affect cosmological results. We measure locally a variation of three and four bins. Extrapolating H₀(z) to z = 1100, the redshift of the last scattering surface, we obtain values of H₀ compatible in 1σ with Planck measurements independent of the cosmological models and number of bins we investigated. Thus, we have reduced the H₀ tension in the range from 54% to 72% for both cosmological models. If the decreasing trend of H₀(z)is real, it could be due to astrophysical selection effects or to modified gravity.

Additional analysis has been performed with BAO and GRBs.