"10-20" meaning in English

{
  "forms": [
    {
      "form": "10-20s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "10-20 (plural 10-20s)",
      "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"
        }
      ],
      "examples": [
        {
          "text": "Do you know the 10-20 of that smokey?"
        }
      ],
      "glosses": [
        "Location."
      ],
      "id": "en-10-20-en-noun-mng7WLI2",
      "qualifier": "CB slang",
      "raw_glosses": [
        "(CB slang) Location."
      ],
      "related": [
        {
          "word": "10-4"
        }
      ]
    }
  ],
  "word": "10-20"
}

{
  "forms": [
    {
      "form": "10-20s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "10-20 (plural 10-20s)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "10-4"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English terms spelled with numbers",
        "English words without vowels"
      ],
      "examples": [
        {
          "text": "Do you know the 10-20 of that smokey?"
        }
      ],
      "glosses": [
        "Location."
      ],
      "qualifier": "CB slang",
      "raw_glosses": [
        "(CB slang) Location."
      ]
    }
  ],
  "word": "10-20"
}