{
 "title": "Flags at anchor in California, 1769–1821",
 "measure": "share of recorded arrivals; 5-year centred rolling mean, annual values shown behind",
 "window": 5,
 "min_window_n": 20,
 "year_range": [
  1769,
  1821
 ],
 "generated_from": "data/visits.csv",
 "n_in_scope": 847,
 "n_total": 2072,
 "excluded": {
  "after_1821": 554,
  "no_date": 9,
  "no_flag": 662
 },
 "labels": {
  "spain": "Spain",
  "usa": "United States",
  "russia": "Russia",
  "britain": "Britain",
  "france": "France",
  "other": "Argentina"
 },
 "order": [
  "spain",
  "usa",
  "russia",
  "britain",
  "france",
  "other"
 ],
 "first_arrival": {
  "spain": 1769,
  "usa": 1796,
  "russia": 1806,
  "britain": 1792,
  "france": 1786,
  "other": 1818
 },
 "years": [
  1769,
  1770,
  1771,
  1772,
  1773,
  1774,
  1775,
  1776,
  1777,
  1778,
  1779,
  1780,
  1781,
  1782,
  1783,
  1784,
  1785,
  1786,
  1787,
  1788,
  1789,
  1790,
  1791,
  1792,
  1793,
  1794,
  1795,
  1796,
  1797,
  1798,
  1799,
  1800,
  1801,
  1802,
  1803,
  1804,
  1805,
  1806,
  1807,
  1808,
  1809,
  1810,
  1811,
  1812,
  1813,
  1814,
  1815,
  1816,
  1817,
  1818,
  1819,
  1820,
  1821
 ],
 "n_by_year": {
  "1769": 4,
  "1770": 0,
  "1771": 0,
  "1772": 4,
  "1773": 0,
  "1774": 1,
  "1775": 12,
  "1776": 11,
  "1777": 5,
  "1778": 6,
  "1779": 9,
  "1780": 2,
  "1781": 0,
  "1782": 4,
  "1783": 2,
  "1784": 8,
  "1785": 8,
  "1786": 16,
  "1787": 10,
  "1788": 2,
  "1789": 1,
  "1790": 5,
  "1791": 20,
  "1792": 25,
  "1793": 48,
  "1794": 57,
  "1795": 47,
  "1796": 43,
  "1797": 65,
  "1798": 33,
  "1799": 20,
  "1800": 11,
  "1801": 18,
  "1802": 4,
  "1803": 20,
  "1804": 21,
  "1805": 12,
  "1806": 31,
  "1807": 21,
  "1808": 11,
  "1809": 9,
  "1810": 12,
  "1811": 3,
  "1812": 10,
  "1813": 6,
  "1814": 18,
  "1815": 30,
  "1816": 41,
  "1817": 31,
  "1818": 16,
  "1819": 22,
  "1820": 13,
  "1821": 19
 },
 "series": {
  "spain": [
   {
    "year": 1769,
    "share": null,
    "window_n": 4,
    "window_count": 4
   },
   {
    "year": 1770,
    "share": null,
    "window_n": 8,
    "window_count": 8
   },
   {
    "year": 1771,
    "share": null,
    "window_n": 8,
    "window_count": 8
   },
   {
    "year": 1772,
    "share": null,
    "window_n": 5,
    "window_count": 5
   },
   {
    "year": 1773,
    "share": null,
    "window_n": 17,
    "window_count": 17
   },
   {
    "year": 1774,
    "share": 100.0,
    "window_n": 28,
    "window_count": 28
   },
   {
    "year": 1775,
    "share": 100.0,
    "window_n": 29,
    "window_count": 29
   },
   {
    "year": 1776,
    "share": 100.0,
    "window_n": 35,
    "window_count": 35
   },
   {
    "year": 1777,
    "share": 100.0,
    "window_n": 43,
    "window_count": 43
   },
   {
    "year": 1778,
    "share": 100.0,
    "window_n": 33,
    "window_count": 33
   },
   {
    "year": 1779,
    "share": 100.0,
    "window_n": 22,
    "window_count": 22
   },
   {
    "year": 1780,
    "share": 100.0,
    "window_n": 21,
    "window_count": 21
   },
   {
    "year": 1781,
    "share": null,
    "window_n": 17,
    "window_count": 17
   },
   {
    "year": 1782,
    "share": null,
    "window_n": 16,
    "window_count": 16
   },
   {
    "year": 1783,
    "share": 100.0,
    "window_n": 22,
    "window_count": 22
   },
   {
    "year": 1784,
    "share": 94.7,
    "window_n": 38,
    "window_count": 36
   },
   {
    "year": 1785,
    "share": 95.5,
    "window_n": 44,
    "window_count": 42
   },
   {
    "year": 1786,
    "share": 95.5,
    "window_n": 44,
    "window_count": 42
   },
   {
    "year": 1787,
    "share": 94.6,
    "window_n": 37,
    "window_count": 35
   },
   {
    "year": 1788,
    "share": 94.1,
    "window_n": 34,
    "window_count": 32
   },
   {
    "year": 1789,
    "share": 100.0,
    "window_n": 38,
    "window_count": 38
   },
   {
    "year": 1790,
    "share": 88.7,
    "window_n": 53,
    "window_count": 47
   },
   {
    "year": 1791,
    "share": 74.7,
    "window_n": 99,
    "window_count": 74
   },
   {
    "year": 1792,
    "share": 76.8,
    "window_n": 155,
    "window_count": 119
   },
   {
    "year": 1793,
    "share": 75.6,
    "window_n": 197,
    "window_count": 149
   },
   {
    "year": 1794,
    "share": 75.0,
    "window_n": 220,
    "window_count": 165
   },
   {
    "year": 1795,
    "share": 79.6,
    "window_n": 260,
    "window_count": 207
   },
   {
    "year": 1796,
    "share": 84.5,
    "window_n": 245,
    "window_count": 207
   },
   {
    "year": 1797,
    "share": 83.2,
    "window_n": 208,
    "window_count": 173
   },
   {
    "year": 1798,
    "share": 85.5,
    "window_n": 172,
    "window_count": 147
   },
   {
    "year": 1799,
    "share": 85.7,
    "window_n": 147,
    "window_count": 126
   },
   {
    "year": 1800,
    "share": 77.9,
    "window_n": 86,
    "window_count": 67
   },
   {
    "year": 1801,
    "share": 65.8,
    "window_n": 73,
    "window_count": 48
   },
   {
    "year": 1802,
    "share": 56.8,
    "window_n": 74,
    "window_count": 42
   },
   {
    "year": 1803,
    "share": 56.0,
    "window_n": 75,
    "window_count": 42
   },
   {
    "year": 1804,
    "share": 34.1,
    "window_n": 88,
    "window_count": 30
   },
   {
    "year": 1805,
    "share": 33.3,
    "window_n": 105,
    "window_count": 35
   },
   {
    "year": 1806,
    "share": 30.2,
    "window_n": 96,
    "window_count": 29
   },
   {
    "year": 1807,
    "share": 29.8,
    "window_n": 84,
    "window_count": 25
   },
   {
    "year": 1808,
    "share": 23.8,
    "window_n": 84,
    "window_count": 20
   },
   {
    "year": 1809,
    "share": 30.4,
    "window_n": 56,
    "window_count": 17
   },
   {
    "year": 1810,
    "share": 22.2,
    "window_n": 45,
    "window_count": 10
   },
   {
    "year": 1811,
    "share": 22.5,
    "window_n": 40,
    "window_count": 9
   },
   {
    "year": 1812,
    "share": 18.4,
    "window_n": 49,
    "window_count": 9
   },
   {
    "year": 1813,
    "share": 11.9,
    "window_n": 67,
    "window_count": 8
   },
   {
    "year": 1814,
    "share": 12.4,
    "window_n": 105,
    "window_count": 13
   },
   {
    "year": 1815,
    "share": 14.3,
    "window_n": 126,
    "window_count": 18
   },
   {
    "year": 1816,
    "share": 11.0,
    "window_n": 136,
    "window_count": 15
   },
   {
    "year": 1817,
    "share": 20.0,
    "window_n": 140,
    "window_count": 28
   },
   {
    "year": 1818,
    "share": 23.6,
    "window_n": 123,
    "window_count": 29
   },
   {
    "year": 1819,
    "share": 25.7,
    "window_n": 101,
    "window_count": 26
   },
   {
    "year": 1820,
    "share": 30.0,
    "window_n": 70,
    "window_count": 21
   },
   {
    "year": 1821,
    "share": 38.9,
    "window_n": 54,
    "window_count": 21
   }
  ],
  "usa": [
   {
    "year": 1769,
    "share": null,
    "window_n": 4,
    "window_count": 0
   },
   {
    "year": 1770,
    "share": null,
    "window_n": 8,
    "window_count": 0
   },
   {
    "year": 1771,
    "share": null,
    "window_n": 8,
    "window_count": 0
   },
   {
    "year": 1772,
    "share": null,
    "window_n": 5,
    "window_count": 0
   },
   {
    "year": 1773,
    "share": null,
    "window_n": 17,
    "window_count": 0
   },
   {
    "year": 1774,
    "share": null,
    "window_n": 28,
    "window_count": 0
   },
   {
    "year": 1775,
    "share": null,
    "window_n": 29,
    "window_count": 0
   },
   {
    "year": 1776,
    "share": null,
    "window_n": 35,
    "window_count": 0
   },
   {
    "year": 1777,
    "share": null,
    "window_n": 43,
    "window_count": 0
   },
   {
    "year": 1778,
    "share": null,
    "window_n": 33,
    "window_count": 0
   },
   {
    "year": 1779,
    "share": null,
    "window_n": 22,
    "window_count": 0
   },
   {
    "year": 1780,
    "share": null,
    "window_n": 21,
    "window_count": 0
   },
   {
    "year": 1781,
    "share": null,
    "window_n": 17,
    "window_count": 0
   },
   {
    "year": 1782,
    "share": null,
    "window_n": 16,
    "window_count": 0
   },
   {
    "year": 1783,
    "share": null,
    "window_n": 22,
    "window_count": 0
   },
   {
    "year": 1784,
    "share": null,
    "window_n": 38,
    "window_count": 0
   },
   {
    "year": 1785,
    "share": null,
    "window_n": 44,
    "window_count": 0
   },
   {
    "year": 1786,
    "share": null,
    "window_n": 44,
    "window_count": 0
   },
   {
    "year": 1787,
    "share": null,
    "window_n": 37,
    "window_count": 0
   },
   {
    "year": 1788,
    "share": null,
    "window_n": 34,
    "window_count": 0
   },
   {
    "year": 1789,
    "share": null,
    "window_n": 38,
    "window_count": 0
   },
   {
    "year": 1790,
    "share": null,
    "window_n": 53,
    "window_count": 0
   },
   {
    "year": 1791,
    "share": null,
    "window_n": 99,
    "window_count": 0
   },
   {
    "year": 1792,
    "share": null,
    "window_n": 155,
    "window_count": 0
   },
   {
    "year": 1793,
    "share": null,
    "window_n": 197,
    "window_count": 0
   },
   {
    "year": 1794,
    "share": null,
    "window_n": 220,
    "window_count": 3
   },
   {
    "year": 1795,
    "share": null,
    "window_n": 260,
    "window_count": 3
   },
   {
    "year": 1796,
    "share": 2.9,
    "window_n": 245,
    "window_count": 7
   },
   {
    "year": 1797,
    "share": 4.3,
    "window_n": 208,
    "window_count": 9
   },
   {
    "year": 1798,
    "share": 5.8,
    "window_n": 172,
    "window_count": 10
   },
   {
    "year": 1799,
    "share": 6.1,
    "window_n": 147,
    "window_count": 9
   },
   {
    "year": 1800,
    "share": 10.5,
    "window_n": 86,
    "window_count": 9
   },
   {
    "year": 1801,
    "share": 20.5,
    "window_n": 73,
    "window_count": 15
   },
   {
    "year": 1802,
    "share": 35.1,
    "window_n": 74,
    "window_count": 26
   },
   {
    "year": 1803,
    "share": 37.3,
    "window_n": 75,
    "window_count": 28
   },
   {
    "year": 1804,
    "share": 54.5,
    "window_n": 88,
    "window_count": 48
   },
   {
    "year": 1805,
    "share": 58.1,
    "window_n": 105,
    "window_count": 61
   },
   {
    "year": 1806,
    "share": 56.2,
    "window_n": 96,
    "window_count": 54
   },
   {
    "year": 1807,
    "share": 54.8,
    "window_n": 84,
    "window_count": 46
   },
   {
    "year": 1808,
    "share": 58.3,
    "window_n": 84,
    "window_count": 49
   },
   {
    "year": 1809,
    "share": 48.2,
    "window_n": 56,
    "window_count": 27
   },
   {
    "year": 1810,
    "share": 42.2,
    "window_n": 45,
    "window_count": 19
   },
   {
    "year": 1811,
    "share": 47.5,
    "window_n": 40,
    "window_count": 19
   },
   {
    "year": 1812,
    "share": 44.9,
    "window_n": 49,
    "window_count": 22
   },
   {
    "year": 1813,
    "share": 37.3,
    "window_n": 67,
    "window_count": 25
   },
   {
    "year": 1814,
    "share": 41.9,
    "window_n": 105,
    "window_count": 44
   },
   {
    "year": 1815,
    "share": 34.1,
    "window_n": 126,
    "window_count": 43
   },
   {
    "year": 1816,
    "share": 35.3,
    "window_n": 136,
    "window_count": 48
   },
   {
    "year": 1817,
    "share": 32.1,
    "window_n": 140,
    "window_count": 45
   },
   {
    "year": 1818,
    "share": 30.9,
    "window_n": 123,
    "window_count": 38
   },
   {
    "year": 1819,
    "share": 20.8,
    "window_n": 101,
    "window_count": 21
   },
   {
    "year": 1820,
    "share": 24.3,
    "window_n": 70,
    "window_count": 17
   },
   {
    "year": 1821,
    "share": 16.7,
    "window_n": 54,
    "window_count": 9
   }
  ],
  "russia": [
   {
    "year": 1769,
    "share": null,
    "window_n": 4,
    "window_count": 0
   },
   {
    "year": 1770,
    "share": null,
    "window_n": 8,
    "window_count": 0
   },
   {
    "year": 1771,
    "share": null,
    "window_n": 8,
    "window_count": 0
   },
   {
    "year": 1772,
    "share": null,
    "window_n": 5,
    "window_count": 0
   },
   {
    "year": 1773,
    "share": null,
    "window_n": 17,
    "window_count": 0
   },
   {
    "year": 1774,
    "share": null,
    "window_n": 28,
    "window_count": 0
   },
   {
    "year": 1775,
    "share": null,
    "window_n": 29,
    "window_count": 0
   },
   {
    "year": 1776,
    "share": null,
    "window_n": 35,
    "window_count": 0
   },
   {
    "year": 1777,
    "share": null,
    "window_n": 43,
    "window_count": 0
   },
   {
    "year": 1778,
    "share": null,
    "window_n": 33,
    "window_count": 0
   },
   {
    "year": 1779,
    "share": null,
    "window_n": 22,
    "window_count": 0
   },
   {
    "year": 1780,
    "share": null,
    "window_n": 21,
    "window_count": 0
   },
   {
    "year": 1781,
    "share": null,
    "window_n": 17,
    "window_count": 0
   },
   {
    "year": 1782,
    "share": null,
    "window_n": 16,
    "window_count": 0
   },
   {
    "year": 1783,
    "share": null,
    "window_n": 22,
    "window_count": 0
   },
   {
    "year": 1784,
    "share": null,
    "window_n": 38,
    "window_count": 0
   },
   {
    "year": 1785,
    "share": null,
    "window_n": 44,
    "window_count": 0
   },
   {
    "year": 1786,
    "share": null,
    "window_n": 44,
    "window_count": 0
   },
   {
    "year": 1787,
    "share": null,
    "window_n": 37,
    "window_count": 0
   },
   {
    "year": 1788,
    "share": null,
    "window_n": 34,
    "window_count": 0
   },
   {
    "year": 1789,
    "share": null,
    "window_n": 38,
    "window_count": 0
   },
   {
    "year": 1790,
    "share": null,
    "window_n": 53,
    "window_count": 0
   },
   {
    "year": 1791,
    "share": null,
    "window_n": 99,
    "window_count": 0
   },
   {
    "year": 1792,
    "share": null,
    "window_n": 155,
    "window_count": 0
   },
   {
    "year": 1793,
    "share": null,
    "window_n": 197,
    "window_count": 0
   },
   {
    "year": 1794,
    "share": null,
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    "window_count": 0
   },
   {
    "year": 1795,
    "share": null,
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    "window_count": 0
   },
   {
    "year": 1796,
    "share": null,
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    "window_count": 0
   },
   {
    "year": 1797,
    "share": null,
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    "window_count": 0
   },
   {
    "year": 1798,
    "share": null,
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    "window_count": 0
   },
   {
    "year": 1799,
    "share": null,
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    "window_count": 0
   },
   {
    "year": 1800,
    "share": null,
    "window_n": 86,
    "window_count": 0
   },
   {
    "year": 1801,
    "share": null,
    "window_n": 73,
    "window_count": 0
   },
   {
    "year": 1802,
    "share": null,
    "window_n": 74,
    "window_count": 0
   },
   {
    "year": 1803,
    "share": null,
    "window_n": 75,
    "window_count": 0
   },
   {
    "year": 1804,
    "share": null,
    "window_n": 88,
    "window_count": 4
   },
   {
    "year": 1805,
    "share": null,
    "window_n": 105,
    "window_count": 4
   },
   {
    "year": 1806,
    "share": 6.2,
    "window_n": 96,
    "window_count": 6
   },
   {
    "year": 1807,
    "share": 9.5,
    "window_n": 84,
    "window_count": 8
   },
   {
    "year": 1808,
    "share": 11.9,
    "window_n": 84,
    "window_count": 10
   },
   {
    "year": 1809,
    "share": 16.1,
    "window_n": 56,
    "window_count": 9
   },
   {
    "year": 1810,
    "share": 31.1,
    "window_n": 45,
    "window_count": 14
   },
   {
    "year": 1811,
    "share": 30.0,
    "window_n": 40,
    "window_count": 12
   },
   {
    "year": 1812,
    "share": 28.6,
    "window_n": 49,
    "window_count": 14
   },
   {
    "year": 1813,
    "share": 43.3,
    "window_n": 67,
    "window_count": 29
   },
   {
    "year": 1814,
    "share": 39.0,
    "window_n": 105,
    "window_count": 41
   },
   {
    "year": 1815,
    "share": 39.7,
    "window_n": 126,
    "window_count": 50
   },
   {
    "year": 1816,
    "share": 41.2,
    "window_n": 136,
    "window_count": 56
   },
   {
    "year": 1817,
    "share": 38.6,
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    "year": 1775,
    "n": 12,
    "count": 0,
    "share": null
   },
   {
    "year": 1776,
    "n": 11,
    "count": 0,
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   },
   {
    "year": 1777,
    "n": 5,
    "count": 0,
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   },
   {
    "year": 1778,
    "n": 6,
    "count": 0,
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   },
   {
    "year": 1779,
    "n": 9,
    "count": 0,
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   },
   {
    "year": 1780,
    "n": 2,
    "count": 0,
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   },
   {
    "year": 1781,
    "n": 0,
    "count": 0,
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   },
   {
    "year": 1782,
    "n": 4,
    "count": 0,
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   },
   {
    "year": 1783,
    "n": 2,
    "count": 0,
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   },
   {
    "year": 1784,
    "n": 8,
    "count": 0,
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   },
   {
    "year": 1785,
    "n": 8,
    "count": 0,
    "share": null
   },
   {
    "year": 1786,
    "n": 16,
    "count": 2,
    "share": 12.5
   },
   {
    "year": 1787,
    "n": 10,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1788,
    "n": 2,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1789,
    "n": 1,
    "count": 0,
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   },
   {
    "year": 1790,
    "n": 5,
    "count": 0,
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   {
    "year": 1791,
    "n": 20,
    "count": 0,
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   {
    "year": 1792,
    "n": 25,
    "count": 0,
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   {
    "year": 1793,
    "n": 48,
    "count": 0,
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   {
    "year": 1794,
    "n": 57,
    "count": 0,
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   },
   {
    "year": 1795,
    "n": 47,
    "count": 0,
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   },
   {
    "year": 1796,
    "n": 43,
    "count": 0,
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   },
   {
    "year": 1797,
    "n": 65,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1798,
    "n": 33,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1799,
    "n": 20,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1800,
    "n": 11,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1801,
    "n": 18,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1802,
    "n": 4,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1803,
    "n": 20,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1804,
    "n": 21,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1805,
    "n": 12,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1806,
    "n": 31,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1807,
    "n": 21,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1808,
    "n": 11,
    "count": 1,
    "share": 9.1
   },
   {
    "year": 1809,
    "n": 9,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1810,
    "n": 12,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1811,
    "n": 3,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1812,
    "n": 10,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1813,
    "n": 6,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1814,
    "n": 18,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1815,
    "n": 30,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1816,
    "n": 41,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1817,
    "n": 31,
    "count": 4,
    "share": 12.9
   },
   {
    "year": 1818,
    "n": 16,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1819,
    "n": 22,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1820,
    "n": 13,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1821,
    "n": 19,
    "count": 0,
    "share": 0.0
   }
  ],
  "other": [
   {
    "year": 1769,
    "n": 4,
    "count": 0,
    "share": null
   },
   {
    "year": 1770,
    "n": 0,
    "count": 0,
    "share": null
   },
   {
    "year": 1771,
    "n": 0,
    "count": 0,
    "share": null
   },
   {
    "year": 1772,
    "n": 4,
    "count": 0,
    "share": null
   },
   {
    "year": 1773,
    "n": 0,
    "count": 0,
    "share": null
   },
   {
    "year": 1774,
    "n": 1,
    "count": 0,
    "share": null
   },
   {
    "year": 1775,
    "n": 12,
    "count": 0,
    "share": null
   },
   {
    "year": 1776,
    "n": 11,
    "count": 0,
    "share": null
   },
   {
    "year": 1777,
    "n": 5,
    "count": 0,
    "share": null
   },
   {
    "year": 1778,
    "n": 6,
    "count": 0,
    "share": null
   },
   {
    "year": 1779,
    "n": 9,
    "count": 0,
    "share": null
   },
   {
    "year": 1780,
    "n": 2,
    "count": 0,
    "share": null
   },
   {
    "year": 1781,
    "n": 0,
    "count": 0,
    "share": null
   },
   {
    "year": 1782,
    "n": 4,
    "count": 0,
    "share": null
   },
   {
    "year": 1783,
    "n": 2,
    "count": 0,
    "share": null
   },
   {
    "year": 1784,
    "n": 8,
    "count": 0,
    "share": null
   },
   {
    "year": 1785,
    "n": 8,
    "count": 0,
    "share": null
   },
   {
    "year": 1786,
    "n": 16,
    "count": 0,
    "share": null
   },
   {
    "year": 1787,
    "n": 10,
    "count": 0,
    "share": null
   },
   {
    "year": 1788,
    "n": 2,
    "count": 0,
    "share": null
   },
   {
    "year": 1789,
    "n": 1,
    "count": 0,
    "share": null
   },
   {
    "year": 1790,
    "n": 5,
    "count": 0,
    "share": null
   },
   {
    "year": 1791,
    "n": 20,
    "count": 0,
    "share": null
   },
   {
    "year": 1792,
    "n": 25,
    "count": 0,
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   },
   {
    "year": 1793,
    "n": 48,
    "count": 0,
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   },
   {
    "year": 1794,
    "n": 57,
    "count": 0,
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   {
    "year": 1795,
    "n": 47,
    "count": 0,
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   },
   {
    "year": 1796,
    "n": 43,
    "count": 0,
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   {
    "year": 1797,
    "n": 65,
    "count": 0,
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   },
   {
    "year": 1798,
    "n": 33,
    "count": 0,
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   },
   {
    "year": 1799,
    "n": 20,
    "count": 0,
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   },
   {
    "year": 1800,
    "n": 11,
    "count": 0,
    "share": null
   },
   {
    "year": 1801,
    "n": 18,
    "count": 0,
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   },
   {
    "year": 1802,
    "n": 4,
    "count": 0,
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   },
   {
    "year": 1803,
    "n": 20,
    "count": 0,
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   {
    "year": 1804,
    "n": 21,
    "count": 0,
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   },
   {
    "year": 1805,
    "n": 12,
    "count": 0,
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   {
    "year": 1806,
    "n": 31,
    "count": 0,
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   },
   {
    "year": 1807,
    "n": 21,
    "count": 0,
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   },
   {
    "year": 1808,
    "n": 11,
    "count": 0,
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   {
    "year": 1809,
    "n": 9,
    "count": 0,
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   },
   {
    "year": 1810,
    "n": 12,
    "count": 0,
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   {
    "year": 1811,
    "n": 3,
    "count": 0,
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   },
   {
    "year": 1812,
    "n": 10,
    "count": 0,
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   },
   {
    "year": 1813,
    "n": 6,
    "count": 0,
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   {
    "year": 1814,
    "n": 18,
    "count": 0,
    "share": null
   },
   {
    "year": 1815,
    "n": 30,
    "count": 0,
    "share": null
   },
   {
    "year": 1816,
    "n": 41,
    "count": 0,
    "share": null
   },
   {
    "year": 1817,
    "n": 31,
    "count": 0,
    "share": null
   },
   {
    "year": 1818,
    "n": 16,
    "count": 2,
    "share": 12.5
   },
   {
    "year": 1819,
    "n": 22,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1820,
    "n": 13,
    "count": 0,
    "share": 0.0
   },
   {
    "year": 1821,
    "n": 19,
    "count": 0,
    "share": 0.0
   }
  ]
 },
 "flag_integrity": {
  "conflicted_names": 35,
  "examples": [
   "columbia",
   "cossack",
   "eagle"
  ],
  "post_1821_spain_rows": 4
 },
 "events": [
  {
   "year": 1786,
   "date": "14–24 Sept 1786",
   "flag": "france",
   "label": "La Pérouse",
   "vessels": "Astrolabe · Boussole",
   "place": "Monterey",
   "note": "The first foreign visit to Spanish California.",
   "status": "reviewed"
  },
  {
   "year": 1817,
   "date": "1817",
   "flag": "france",
   "label": "Roquefeuil",
   "vessels": "Bordelais",
   "place": "San Francisco",
   "note": "The corvette put in under stress of weather.",
   "status": "draft"
  },
  {
   "year": 1818,
   "date": "20 Nov 1818",
   "flag": "argentina",
   "label": "Bouchard",
   "vessels": "La Argentina · Santa Rosa",
   "place": "Monterey, then Refugio",
   "note": "The only foreign attack on Spanish California.",
   "status": "reviewed"
  }
 ],
 "first_visits": [
  {
   "flag": "spain",
   "label": "Spain",
   "year": 1769,
   "date": "1769",
   "vessels": "San Antonio · San Carlos (Sacred Expedition)",
   "place": "San Diego",
   "who": "Portolá and Serra",
   "attestation": "inferred / draft",
   "note": "The founding voyages; the registry dates the first landfall to 1769."
  },
  {
   "flag": "france",
   "label": "France",
   "year": 1786,
   "date": "14-24 Sept 1786",
   "vessels": "Boussole · Astrolabe",
   "place": "Monterey",
   "who": "La Pérouse",
   "attestation": "stated / reviewed",
   "note": "The first visit by any foreign power. Bancroft: 'the first intercourse of the Californians with subjects of a foreign power'."
  },
  {
   "flag": "britain",
   "label": "Britain",
   "year": 1792,
   "date": "14 Nov 1792",
   "vessels": "Discovery",
   "place": "San Francisco",
   "who": "Vancouver",
   "attestation": "stated / reviewed / exact date",
   "note": "The first foreign warship into San Francisco Bay. Nothing British precedes it: the Princesa Real at Monterey in 1790 was the captured British sloop Princess Royal sailing under Spanish colours."
  },
  {
   "flag": "usa",
   "label": "United States",
   "year": 1796,
   "date": "29 Oct 1796",
   "vessels": "Otter, of Boston",
   "place": "Monterey",
   "who": "Dorr",
   "attestation": "reviewed / port-call",
   "note": "The first American ship in a Californian port. An offshore sighting of 28 May 1796 precedes it but is a sighting, not an arrival."
  },
  {
   "flag": "russia",
   "label": "Russia",
   "year": 1806,
   "date": "8 Apr 1806",
   "vessels": "Juno",
   "place": "San Francisco",
   "who": "Rezanov",
   "attestation": "VERIFIED / exact date",
   "note": "Rezanov's provisioning voyage from Sitka; one of only thirteen rows in the registry at verified status."
  },
  {
   "flag": "argentina",
   "label": "Argentina",
   "year": 1818,
   "date": "20 Nov 1818",
   "vessels": "La Argentina · Santa Rosa",
   "place": "Monterey, then Refugio",
   "who": "Bouchard",
   "attestation": "stated / reviewed",
   "note": "Not a visit but an attack: the only foreign assault Spanish California suffered."
  }
 ],
 "review_flags": [
  {
   "row": "france 1808-10-26 (unnamed)",
   "issue": "mention, not a visit: it is Spain's order to seize any French ship entering a Californian port, not a French ship arriving. Class: mention-vs-visit."
  },
  {
   "row": "france 1817-05-24 'Francia'",
   "issue": "probable duplicate of Bordelais the same day: the row's own excerpt glosses 'la corveta Francia' as Roquefeuil's Bordelais. Class: era/name conflation."
  }
 ],
 "caveats": [
  "Scope is 1769–1821. The registry's flag field is not reliable after Mexican independence: 43 visits dated 1822 or later are flagged Spanish, among them vessels named Morelos, Matamoros and Mariquita, and the American Brookline, Volunteer and Leonidas. 19% of post-1821 rows carry a vessel name that appears under a different flag elsewhere in the file, against 7% before 1822.",
  "A line is drawn only where that flag was actually present. It begins at the flag's first recorded arrival, and it stops again wherever the flag is absent for two years or more: a flat line along the axis reads as 'here, at nil' rather than 'not here', which is why France appears as three separate episodes rather than one long line at zero. A single isolated zero inside a continuous presence is kept, because there it really is a measurement. The line is a 5-year centred rolling share, also blank wherever its window holds fewer than 20 records. Faint points behind it are the unsmoothed annual values; the strip beneath gives each year's n.",
  "Flag is the flag as attested or inferred in the record, not a vessel's registry. Within this window 56% of rows are 'attested/inferred' rather than plainly stated.",
  "Most visit rows remain at draft status in the registry's own review workflow.",
  "France is 7 records across three separate occasions, not a trend; two of them are flagged for review (an 1808 decree that is a mention rather than a visit, and a probable duplicate in 1817). Argentina is Bouchard alone and is shown only as an arrival."
 ]
}