Here's an quick graphical reference to the size of the effect: https://arxiv.org/abs/1303.5961 https://arxiv.org/abs/1303.5961 ("Paper-and-pencil cosmological

Here's an quick graphical reference to the size of the effect: https://arxiv.org/abs/1303.5961 https://arxiv.org/abs/1303.5961 ("Paper-and-pencil cosmological calculator")