model

$H_0$

$\langle n_e\rangle$

Equation

(24)

$\langle n_e\rangle$

Equation

(27)

$\langle n_e\rangle$

Equation

(31)

$k{n}_e$

Equation

(21)

straight line, without uncertainties

64.24 ± 0.14

2.08 × 10⁻⁴

0.507

2969

6.94 × 10⁻²⁷

straight line, with uncertainties

67.76 ± 1.08 × 10⁻²

2.2 × 10⁻⁴

0.535

3132

7.32 × 10⁻²⁷