lable
  **NOT_FOUND**       requested network status was not found
  **NOT_MODIFIED**    network status unmodified since If-Modified-Since time
  **BUSY**            directory was busy
  =================== ===========

.. data:: DirStat (enum)

  Enumeration for known stats for ExtraInfoDescriptor's dir_*_direct_dl and
  dir_*_tunneled_dl.

  ===================== ===========
  DirStat               Description
  ===================== ===========
  **COMPLETE**          requests that completed successfully
  **TIMEOUT**           requests that didn't complete within a ten minute timeout
  **RUNNING**           requests still in process when measurement's taken
  **MIN**               smallest rate at which a descriptor was downloaded in B/s
  **MAX**               largest rate at which a descriptor was downloaded in B/s
  **D1-4** and **D6-9** rate of the slowest x/10 download rates in B/s
  **Q1** and **Q3**     rate of the slowest and fastest quarter download rates in B/s
  **MD**                median download rate in B/s
  ===================== ===========
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