Work in progress

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  "Okta" is the unit of measurement to describe the amount of cloud cover.
  Okta is reported in eighths of the celestial dome covered by all clouds visible. The codes represent:
  0: 0/8, the complete absence of cloud;
  1: 1/8 or less, but not zero;
  2: 2/8;
  3: 3/8;
  4: 4/8, half of the sky is covered;
  5: 5/8;
  6: 6/8;
  7: 7/8 or more, but not 8/8;
  8: 8/8, sky is completely covered;
  9: Sky obscured by fog and/or other meteorological phenomena;
  /: Cloud cover is indiscernible for reasons other than fog or other meteorological phenomena, or observation is not made.
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  \"Okta\" is the unit of measurement to describe the amount of cloud cover.
  Okta is reported in eighths of the celestial dome covered by all clouds visible. The codes represent:
  0: 0/8, the complete absence of cloud;
  1: 1/8 or less, but not zero;
  2: 2/8;
  3: 3/8;
  4: 4/8, half of the sky is covered;
  5: 5/8;
  6: 6/8;
  7: 7/8 or more, but not 8/8;
  8: 8/8, sky is completely covered;
  9: Sky obscured by fog and/or other meteorological phenomena;
  /: Cloud cover is indiscernible for reasons other than fog or other meteorological phenomena, or observation is not made.
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  rdfs:label "Okta"@en ;
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