Kolmašová, Ivana http://orcid.org/0000-0002-1704-3846
Imai, Masafumi http://orcid.org/0000-0002-2814-4036
Santolík, Ondřej http://orcid.org/0000-0002-4891-9273
Kurth, William S.
Hospodarsky, George B.
Gurnett, Donald A.
Connerney, John E. P.
Bolton, Scott J.
Article History
Received: 31 January 2018
Accepted: 7 March 2018
First Online: 6 June 2018
Change Date: 20 June 2018
Change Type: Correction
Change Details: In the version of this Letter originally published, in the second sentence of the last paragraph before the Methods section the word ‘altitudes’ was mistakenly used in place of the word ‘latitudes’. The sentence has now been corrected accordingly to: ‘Low-dispersion class 1 events indicate that low-density ionospheric regions predominantly occur in the northern hemisphere at latitudes between 20° and 70°.’
Competing interests
: The authors declare no competing interests.