Baryon acoustic oscillation measurement of the comoving expansion rate, H(z)/(1 + z), measured with BAO with r_d = 147.3 Mpc. The red square is the present measurement at z = 2.34. The measurement by Blomqvist et al. (2019) is the blue dot. The other points are computed using galaxy measurements (Beutler et al. 2011; Ross et al. 2015; Alam et al. 2017). The points at z = 0.106 (Beutler et al. 2011) and z = 0.15 (Ross et al. 2015) are converted from D_V to H(z) using the SNIa measurement of q₀ given by Betoule et al. (2014). Solid black line shows the Pl2015 values (Planck Collaboration XIII 2016).