Correction to: Nature Methods https://doi.org/10.1038/s41592-019-0574-9, published online 27 September 2019.

In the version of this Article originally published, at the end of the caption for Fig. 3f, the text ‘measured in GLOX/MEA’ was missing; this has now been corrected. Additionally, Supplementary Tables 3 and 4 were missing from the Supplementary Information, and their citations were missing from the main text. The Supplementary Information file has now been updated; and citations have been added in the main text to the sentence beginning “We thus extended our counting references...”, for Supplementary Table 3; and in the sentences beginning “Example images for all labels...” and “Typical acquisition parameters can be found...” for Supplementary Table 4.