LottoStatistics — Step 1: archive audit and dataset identity

Dataset identity

Wheel rows

105 297

Distinct draw dates

10 925

Time span

1871-01-07
2026-09-11

Wheels

Dataset SHA-256

ebc3b26c0ce5f923cfa111c3daf31950cd010abcb7c967d007b7b5d3633bd531

Integrity checks

Check	Result
Unparseable rows	OK
Duplicate date + wheel	OK
Numbers outside 1–90	OK
Repeated number inside the same five-number draw	OK
Inconsistent draw number on the same date	OK

Wheel identity

Wheel	First appearance	Last appearance	Available draws	Years covered
Bari	1874-05-02	2026-09-11	10 752	153
Cagliari	1939-07-08	2026-09-11	7 277	88
Firenze	1871-01-07	2026-09-11	10 918	156
Genova	1939-07-08	2026-09-11	7 349	88
Milano	1871-01-07	2026-09-11	10 924	156
Napoli	1871-01-07	2026-09-11	10 920	156
Nazionale	2005-05-04	2026-09-11	3 486	22
Palermo	1871-01-07	2026-09-11	10 900	156
Roma	1871-01-07	2026-09-11	10 924	156
Torino	1871-01-07	2026-09-11	10 924	156
Venezia	1871-01-07	2026-09-11	10 923	156

Annual coverage

Number of distinct draw dates present in the archive for each year. Major changes are historical facts to explain, not errors to be automatically corrected.

* The final year is incomplete at the archive cut-off date and is excluded from the automatic cadence-change detector.

Complete annual table

Year	Distinct draw dates	Rows	Min wheels/date	Max wheels/date	Modal wheels/date	Dates with a wheel set different from the yearly mode
1871	52	364	7	7	7	0
1872	52	364	7	7	7	0
1873	52	364	7	7	7	0
1874	52	399	7	8	8	17
1875	52	416	8	8	8	0
1876	53	424	8	8	8	0
1877	52	416	8	8	8	0
1878	52	416	8	8	8	0
1879	52	416	8	8	8	0
1880	52	416	8	8	8	0
1881	53	424	8	8	8	0
1882	52	416	8	8	8	0
1883	52	416	8	8	8	0
1884	52	416	8	8	8	0
1885	52	416	8	8	8	0
1886	53	424	8	8	8	0
1887	52	416	8	8	8	0
1888	52	416	8	8	8	0
1889	52	416	8	8	8	0
1890	52	416	8	8	8	0
1891	52	416	8	8	8	0
1892	53	424	8	8	8	0
1893	52	416	8	8	8	0
1894	52	416	8	8	8	0
1895	52	416	8	8	8	0
1896	52	416	8	8	8	0
1897	53	424	8	8	8	0
1898	52	416	8	8	8	0
1899	52	416	8	8	8	0
1900	52	416	8	8	8	0
1901	52	416	8	8	8	0
1902	52	416	8	8	8	0
1903	52	416	8	8	8	0
1904	53	424	8	8	8	0
1905	52	416	8	8	8	0
1906	52	416	8	8	8	0
1907	52	416	8	8	8	0
1908	52	416	8	8	8	0
1909	53	424	8	8	8	0
1910	52	416	8	8	8	0
1911	52	416	8	8	8	0
1912	52	416	8	8	8	0
1913	52	416	8	8	8	0
1914	52	416	8	8	8	0
1915	53	424	8	8	8	0
1916	52	416	8	8	8	0
1917	52	416	8	8	8	0
1918	52	416	8	8	8	0
1919	52	416	8	8	8	0
1920	53	424	8	8	8	0
1921	52	416	8	8	8	0
1922	52	416	8	8	8	0
1923	52	416	8	8	8	0
1924	52	416	8	8	8	0
1925	52	416	8	8	8	0
1926	53	424	8	8	8	0
1927	52	416	8	8	8	0
1928	52	416	8	8	8	0
1929	52	416	8	8	8	0
1930	52	416	8	8	8	0
1931	52	416	8	8	8	0
1932	53	424	8	8	8	0
1933	52	416	8	8	8	0
1934	52	416	8	8	8	0
1935	52	416	8	8	8	0
1936	52	416	8	8	8	0
1937	53	424	8	8	8	0
1938	52	416	8	8	8	0
1939	52	468	8	10	8	26
1940	52	520	10	10	10	0
1941	52	520	10	10	10	0
1942	52	520	10	10	10	0
1943	53	469	6	10	10	38
1944	52	466	8	10	9	14
1945	52	518	8	10	10	1
1946	52	519	9	10	10	1
1947	52	520	10	10	10	0
1948	53	530	10	10	10	0
1949	52	520	10	10	10	0
1950	52	520	10	10	10	0
1951	52	520	10	10	10	0
1952	52	520	10	10	10	0
1953	52	520	10	10	10	0
1954	53	530	10	10	10	0
1955	52	520	10	10	10	0
1956	52	520	10	10	10	0
1957	52	520	10	10	10	0
1958	52	520	10	10	10	0
1959	52	520	10	10	10	0
1960	53	530	10	10	10	0
1961	51	510	10	10	10	0
1962	52	520	10	10	10	0
1963	52	520	10	10	10	0
1964	52	520	10	10	10	0
1965	52	520	10	10	10	0
1966	53	530	10	10	10	0
1967	52	520	10	10	10	0
1968	52	520	10	10	10	0
1969	52	520	10	10	10	0
1970	52	520	10	10	10	0
1971	52	520	10	10	10	0
1972	53	530	10	10	10	0
1973	52	520	10	10	10	0
1974	52	520	10	10	10	0
1975	52	520	10	10	10	0
1976	52	520	10	10	10	0
1977	53	530	10	10	10	0
1978	52	520	10	10	10	0
1979	52	520	10	10	10	0
1980	52	520	10	10	10	0
1981	52	520	10	10	10	0
1982	52	520	10	10	10	0
1983	53	530	10	10	10	0
1984	52	520	10	10	10	0
1985	52	520	10	10	10	0
1986	52	520	10	10	10	0
1987	52	520	10	10	10	0
1988	53	530	10	10	10	0
1989	52	520	10	10	10	0
1990	52	520	10	10	10	0
1991	52	520	10	10	10	0
1992	52	520	10	10	10	0
1993	52	520	10	10	10	0
1994	53	530	10	10	10	0
1995	52	520	10	10	10	0
1996	52	520	10	10	10	0
1997	95	950	10	10	10	0
1998	104	1 040	10	10	10	0
1999	104	1 040	10	10	10	0
2000	105	1 050	10	10	10	0
2001	105	1 050	10	10	10	0
2002	109	1 090	10	10	10	0
2003	105	1 050	10	10	10	0
2004	104	1 040	10	10	10	0
2005	133	1 428	10	11	11	35
2006	156	1 716	11	11	11	0
2007	156	1 716	11	11	11	0
2008	157	1 727	11	11	11	0
2009	157	1 727	11	11	11	0
2010	156	1 716	11	11	11	0
2011	157	1 727	11	11	11	0
2012	156	1 716	11	11	11	0
2013	157	1 727	11	11	11	0
2014	156	1 716	11	11	11	0
2015	157	1 727	11	11	11	0
2016	157	1 727	11	11	11	0
2017	156	1 716	11	11	11	0
2018	156	1 716	11	11	11	0
2019	157	1 727	11	11	11	0
2020	139	1 529	11	11	11	0
2021	156	1 716	11	11	11	0
2022	157	1 727	11	11	11	0
2023	182	2 002	11	11	11	0
2024	209	2 299	11	11	11	0
2025	208	2 288	11	11	11	0
2026 *	146	1 606	11	11	11	0

Transitions directly observable in the data

Note: Step 1 describes what is present in the data. Historical causes will be documented separately with cited sources.

First appearances of wheels

Date	Wheels at first appearance
1871-01-07	Firenze,Milano,Napoli,Palermo,Roma,Torino,Venezia
1874-05-02	Bari
1939-07-08	Cagliari,Genova
2005-05-04	Nazionale

Major changes in annual draw count

Year	Previous year	Current year	Δ
1997	52	95	+43
2005	104	133	+29
2006	133	156	+23
2020	157	139	-18
2021	139	156	+17
2023	157	182	+25
2024	182	209	+27

Coverage discontinuities

A date is flagged when its set of wheels differs from the most frequent wheel set in the same year. This is a purely descriptive criterion: it detects introductions, interruptions and other discontinuities without assigning a cause.

Years involved

1874: 171939: 261943: 381944: 141945: 11946: 12005: 35

Method and reproducibility

Every value in this report is calculated directly from the CSV. The Italian and English reports share exactly the same numeric result object; only the prose changes. Missing data are never interpolated or reconstructed.

LottoStatistics — descriptive results, not gambling predictions.