Boxplot of the spread of the relative minimum B_z (Δmin(B_z)) values at Earth and the virtual spacecraft at an offset of latitude and longitude of 5–10° – (a) Event 1, (b) Event 2. The red dot and the orange line in the boxes represent the Δmin(B_z) at the location of Earth and the median Δmin(B_z) of the distribution, respectively. The dashed blue line indicates Δmin(B_z) = 0 as a reference.