@article{Pottiaux:4644,
      author        = "Pottiaux, Eric",
      title         = "{ROB's operational quasi real-time GNSS-based tropospheric
                       delay models, grids, and maps (from 1 Jan 2019 until 31 Dec
                       2019)}",
      year          = "2019",
      note          = "The database is continuously and operationally filled.
                       Data retention use a floating windows containing the last 2
                       years of data.",
}