docs: def obtain(date, compressed=True):
      """
      Return an integer matrix with the Linke turbidity multiplied by 20. So it
      should be divided by 20 in before the usage (over the CPU or the GPU).
  
      Keyword arguments:
      date -- the datetime of the file.
      compressed -- the true value if it should return a matrix of integers or
      if it should return an uncompressed matrix of floats.
      """
      pattern = "%s/tifs/%s_longlat_wgs84.tif"
      ds = gdal.Open(pattern % (localpath, str(date.month).zfill(2)))
      linke = ds.ReadAsArray()
      return linke if compressed else linke / 20.