Tsang, Alan C. H.
Lam, Amy T.
Riedel-Kruse, Ingmar H.
Article History
Received: 31 March 2018
Accepted: 15 August 2018
First Online: 24 September 2018
Change Date: 9 October 2018
Change Type: Correction
Change Details: In the version of this Article originally published, the angular oscillation of amplitude in Fig. 4a was incorrectly labelled <i>ζ</i>; it should have been <i>ξ</i>. Also, the blue line in the top-right corner of Fig. 6d should not have been dash-dotted but solid. These have now been corrected in all versions of the Article.
Competing interests
: The authors declare no competing interests.