RoboPol: AGN polarimetric monitoring data
  We present uniformly reprocessed and re-calibrated data from the RoboPol
programme of optopolarimetric monitoring of active galactic nuclei (AGN),
covering observations between 2013, when the instrument was commissioned, and
2017. In total, the dataset presented in this paper includes 5068 observations
of 222 AGN with Dec > -25 deg. We describe the current version of the RoboPol
pipeline that was used to process and calibrate the entire dataset, and we make
the data publicly available for use by the astronomical community. Average
quantities summarising optopolarimetric behaviour (average degree of
polarization, polarization variability index) are also provided for each source
we have observed and for the time interval we have followed it.
