After publication of this article (Nishitani et al. 2019), it was brought to our attention that the figure 5 is incorrect, where the positions of DCE and SPS were misplaced. The correct figure 5 is as below, the original publication has been corrected.
Nozomu Nishitani, John Michael Ruohoniemi, Mark Lester, Joseph Benjamin Harold Baker, Alexandre Vasilyevich Koustov, et al.. Erratum: Correction to: Review of the accomplishments of mid-latitude Super Dual Auroral Radar Network (SuperDARN) HF radars. 2019, ⟨10.1186/s40645-019-0300-3⟩. ⟨insu-03674422⟩