EHT Visibility Amplitude Data of M87* in 2011-2013

We release a data set to accompany the "Monitoring the Morphology of M87* in 2009–2017 with the Event Horizon Telescope" paper (Wielgus et al. 2020). It contains timestamp, telescope codes, u-v coordinates, debiased visibility amplitude, and estimated RMS uncertainty of M87* data from the Event Horizon Telescope (EHT)'s 2011, 2012, and 2013 observation campaign. The data set is made public simultaneously with Wielgus et al. (2020). The 2009 data set was previously used in Doeleman et al. (2012) and can be found here: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/other/Sci/338.355 . The 2012 visibility amplitude data set was previously used in Akiyama et al. (2015), but has been now updated (see Wielgus et al. for details) and is republished. The 2012 closure phase data set did not change and can be found here: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/ApJ/807/150 . The 2011 and 2013 data were never published before. Details of the data processing are documented in section 2 of Wielgus et al. (2020). The paper also uses EHT's 2017 data, which was described in details in EHTC et al. (2019).