Abstract
Some minor issues were discovered after publication of Opt Lett. 43, 5801 (2018) and are corrected here. They do not change the main message of the paper.
© 2020 Optical Society of America
This has implications for the conclusion at the end of the paragraph. The sentence that begins "Hence, our models" should be changed to "Hence, our models deviate by a factor of 2 with STED data from Ref. [4]."
In addition, the labels (e) and (f) are missing from Fig. 3, and some of the y-axis labels were overlapping. The updated figure [Fig. 1] is shown here. The figure caption did not change.
Reference
1. A. Frutiger, C. D. Tschannen, Y. Blickenstorfer, A. M. Reichmuth, C. Fattinger, and J. Voros, Opt. Lett. 43, 5801 (2018).