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Title: Optical variability of a newly discovered blazar sample from the
    BZCAT Catalog 
Authors: Kalita N., Gupta A.C., Gu M. 
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Description of contents: This tar.gz archive file contains the data behind 
    Figure 1, including the differential R- and V- band light curves. The data
    are provided in two files:
    
    dbf1-r.txt = 13407d711dd3d4a5e2ad345ef6649e28
    dbf1-v.txt = edb9cf97a4eb0cd2752a4ed7251837bf
    
    The files contain the differential magnitude of the source and of
    a comparison star (CS1 in Table 4) relative to a reference standard star.

System requirements: The files are formatted according to the machine
    readable format used by the AAS Journals and CDS/VizieR. Specific
    information on the structure of MRT files can be found at:

        AAS: https://journals.aas.org/mrt-overview/
        CDS: http://cds.u-strasbg.fr/doc/catstd.htx

    These files can be read in python using the astropy package:

        from astropy.table import Table
        data = Table.read("dbf1-v.txt", format="ascii.cds")

    or with the most recent version of TOPCAT (> Version 4.8)

Additional comments: Basic parameters of the Roma BZCAT catalog blazars
    studied in the paper are presented in Table 2. Positions and magnitudes
    of the reference and comparison stars used for differential photometry
    of the balzar sample are given in Table 4. The data files provided here
    contain the differential magnitude of the sources and one of their
    respective comparison star (CS1) relative to a reference star. For
    details please see section 2.1 in the paper.

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