"Wolf number" meaning in English

{
  "etymology_text": "The idea of compiling the information about the sunspot number from various observers originated with Rudolf Wolf in 1848 in Zürich, Switzerland.",
  "forms": [
    {
      "form": "Wolf numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Wolf number (plural Wolf numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A measure of the number of sunspots and groups of sunspots present on the surface of the Sun."
      ],
      "id": "en-Wolf_number-en-noun-xbXyVUkI",
      "links": [
        [
          "sunspot",
          "sunspot"
        ]
      ],
      "synonyms": [
        {
          "word": "sunspot number"
        },
        {
          "word": "Zürich number"
        }
      ]
    }
  ],
  "word": "Wolf number"
}

{
  "etymology_text": "The idea of compiling the information about the sunspot number from various observers originated with Rudolf Wolf in 1848 in Zürich, Switzerland.",
  "forms": [
    {
      "form": "Wolf numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Wolf number (plural Wolf numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "A measure of the number of sunspots and groups of sunspots present on the surface of the Sun."
      ],
      "links": [
        [
          "sunspot",
          "sunspot"
        ]
      ],
      "synonyms": [
        {
          "word": "sunspot number"
        },
        {
          "word": "Zürich number"
        }
      ]
    }
  ],
  "word": "Wolf number"
}