| E | O (JD) | O (dat) | Period |
| -132 | 2400571 | 1860-06-09 | 339.09 |
| -131 | 2400908 | 1861-05-12 | 340 |
| -130 | 2401248 | 1862-04-17 | 341.28 |
| -129 | 2401597 | 1863-04-01 | 341.55 |
| -125 | 2402946 | 1866-12-10 | 342.2 |
| -124 | 2403296 | 1867-11-25 | 342.45 |
| -123 | 2403639 | 1868-11-02 | 341.8 |
| -122 | 2403987 | 1869-10-16 | 342.94 |
| -121 | 2404336 | 1870-09-30 | 343.11 |
| -120 | 2404669 | 1871-08-29 | 342.3 |
| -119 | 2405012 | 1872-08-06 | 342.06 |
| -117 | 2405704 | 1874-06-29 | 341.89 |
| -106 | 2409459 | 1884-10-09 | 342.11 |
| -105 | 2409799 | 1885-09-14 | 342.19 |
| -104 | 2410141 | 1886-08-22 | 341.69 |
| -103 | 2410490 | 1887-08-06 | 341.56 |
| -102 | 2410831 | 1888-07-12 | 341.63 |
| -101 | 2411169 | 1889-06-15 | 341.04 |
| -100 | 2411506 | 1890-05-18 | 340.57 |
| -98 | 2412196 | 1892-04-07 | 339.96 |
| -97 | 2412528 | 1893-03-05 | 339.2 |
| -91 | 2414574 | 1898-10-11 | 338.65 |
| -90 | 2414912 | 1899-09-14 | 337.88 |
| -89 | 2415248 | 1900-08-16 | 336.92 |
| -88 | 2415571 | 1901-07-05 | 335.69 |
| -87 | 2415909 | 1902-06-08 | 333.25 |
| -86 | 2416240 | 1903-05-05 | 333.5 |
| -85 | 2416570 | 1904-03-30 | 336.33 |
| -84 | 2416910 | 1905-03-05 | 339.11 |
| -81 | 2417908 | 1907-11-28 | 339.84 |
| -80 | 2418255 | 1908-11-09 | 340 |
| -79 | 2418618 | 1909-11-07 | 340.22 |
| -78 | 2418966 | 1910-10-21 | 341 |
| -77 | 2419300 | 1911-09-20 | 341.79 |
| -76 | 2419630 | 1912-08-15 | 342.14 |
| -75 | 2419974 | 1913-07-25 | 342.35 |
| -74 | 2420300 | 1914-06-16 | 344.21 |
| -73 | 2420648 | 1915-05-30 | 347.08 |
| -72 | 2421015 | 1916-05-31 | 348.22 |
| -71 | 2421362 | 1917-05-13 | 350.5 |
| -70 | 2421723 | 1918-05-09 | 352.06 |
| -69 | 2422066 | 1919-04-17 | 350.43 |
| -68 | 2422413 | 1920-03-29 | 348.72 |
| -67 | 2422768 | 1921-03-19 | 347.08 |
| -66 | 2423109 | 1922-02-23 | 345.57 |
| -65 | 2423460 | 1923-02-09 | 344.92 |
| -64 | 2423799 | 1924-01-14 | 344.28 |
| -63 | 2424145 | 1924-12-25 | 344.08 |
| -62 | 2424482 | 1925-11-27 | 343.79 |
| -61 | 2424826 | 1926-11-06 | 342.93 |
| -60 | 2425175 | 1927-10-21 | 341.56 |
| -59 | 2425519 | 1928-09-29 | 340.43 |
| -58 | 2425863 | 1929-09-08 | 340.01 |
| -57 | 2426197 | 1930-08-08 | 337.79 |
| -56 | 2426529 | 1931-07-06 | 335.93 |
| -55 | 2426864 | 1932-06-05 | 334.78 |
| -54 | 2427204 | 1933-05-11 | 334.21 |
| -53 | 2427526 | 1934-03-29 | 334.36 |
| -52 | 2427871 | 1935-03-09 | 333.43 |
| -51 | 2428198 | 1936-01-30 | 331.78 |
| -50 | 2428541 | 1937-01-07 | 331.13 |
| -49 | 2428866 | 1937-11-28 | 331 |
| -48 | 2429195 | 1938-10-23 | 329.29 |
| -47 | 2429518 | 1939-09-11 | 327.93 |
| -46 | 2429848 | 1940-08-06 | 328.14 |
| -45 | 2430183 | 1941-07-07 | 328.56 |
| -44 | 2430496 | 1942-05-16 | 329.5 |
| -43 | 2430834 | 1943-04-19 | 331.22 |
| -42 | 2431167 | 1944-03-17 | 331.93 |
| -41 | 2431494 | 1945-02-07 | 334.64 |
| -40 | 2431832 | 1946-01-11 | 338.78 |
| -39 | 2432171 | 1946-12-16 | 341 |
| -38 | 2432507 | 1947-11-17 | 343.01 |
| -37 | 2432857 | 1948-11-01 | 344.22 |
| -36 | 2433216 | 1949-10-26 | 345.14 |
| -35 | 2433559 | 1950-10-04 | 346.35 |
| -34 | 2433904 | 1951-09-14 | 345.93 |
| -33 | 2434241 | 1952-08-16 | 344.43 |
| -32 | 2434594 | 1953-08-04 | 342.79 |
| -31 | 2434933 | 1954-07-09 | 340.78 |
| -30 | 2435274 | 1955-06-15 | 339.63 |
| -29 | 2435621 | 1956-05-27 | 339.36 |
| -28 | 2435953 | 1957-04-24 | 340.22 |
| -27 | 2436281 | 1958-03-18 | 342.15 |
| -26 | 2436619 | 1959-02-19 | 343.78 |
| -25 | 2436967 | 1960-02-02 | 345.85 |
| -24 | 2437323 | 1961-01-23 | 348.71 |
| -23 | 2437674 | 1962-01-09 | 350.65 |
| -22 | 2438034 | 1963-01-04 | 350.51 |
| -21 | 2438382 | 1963-12-18 | 348.5 |
| -20 | 2438734 | 1964-12-04 | 345.85 |
| -19 | 2439075 | 1965-11-10 | 343.28 |
| -18 | 2439418 | 1966-10-19 | 342.01 |
| -17 | 2439751 | 1967-09-17 | 341.36 |
| -16 | 2440088 | 1968-08-19 | 340.14 |
| -15 | 2440426 | 1969-07-23 | 339.99 |
| -14 | 2440778 | 1970-07-10 | 341.64 |
| -13 | 2441117 | 1971-06-14 | 343.08 |
| -12 | 2441454 | 1972-05-16 | 342.93 |
| -11 | 2441799 | 1973-04-26 | 341.36 |
| -10 | 2442153 | 1974-04-15 | 339.42 |
| -9 | 2442489 | 1975-03-17 | 339.21 |
| -8 | 2442826 | 1976-02-17 | 338.79 |
| -7 | 2443157 | 1977-01-13 | 336.79 |
| -6 | 2443490 | 1977-12-12 | 335.07 |
| -5 | 2443830 | 1978-11-17 | 334.99 |
| -4 | 2444166 | 1979-10-19 | 335.57 |
| -3 | 2444501 | 1980-09-18 | 336.51 |
| -2 | 2444832 | 1981-08-15 | 336.72 |
| -1 | 2445173 | 1982-07-22 | 337.43 |
| 0 | 2445508 | 1983-06-22 | 338.21 |
| 1 | 2445850 | 1984-05-29 | 338.07 |
| 2 | 2446184 | 1985-04-28 | 337.58 |
| 3 | 2446536 | 1986-04-15 | 337.51 |
| 4 | 2446866 | 1987-03-11 | 337.36 |
| 5 | 2447200 | 1988-02-08 | 337.21 |
| 6 | 2447531 | 1989-01-04 | 337.28 |
| 7 | 2447875 | 1989-12-14 | 337.22 |
| 8 | 2448206 | 1990-11-10 | 338.15 |
| 9 | 2448549 | 1991-10-19 | 339.14 |
| 10 | 2448893 | 1992-09-27 | 339.85 |
| 11 | 2449230 | 1993-08-30 | 341 |
| 12 | 2449570 | 1994-08-05 | 342.01 |
| 13 | 2449909 | 1995-07-10 | 342.36 |
| 14 | 2450255 | 1996-06-20 | 343.14 |
| 15 | 2450600 | 1997-05-31 | 344.06 |
| 16 | 2450943 | 1998-05-09 | 344.93 |
| 17 | 2451292 | 1999-04-23 | 346.08 |
| 18 | 2451635 | 2000-03-31 | 347.22 |
| 19 | 2451982 | 2001-03-13 | 348.07 |
| 20 | 2452326 | 2002-02-20 | 347.92 |
| 21 | 2452683 | 2003-02-12 | 346.28 |
| 22 | 2453033 | 2004-01-28 | 345.08 |
| 23 | 2453383 | 2005-01-12 | 344.43 |
| 24 | 2453723 | 2005-12-18 | 342.28 |
| 25 | 2454052 | 2006-11-12 | 339.42 |
| 26 | 2454396 | 2007-10-22 | 336.71 |
| 27 | 2454734 | 2008-09-24 | 334.93 |
| 28 | 2455067 | 2009-08-23 | 335.36 |
| 29 | 2455401 | 2010-07-23 | 334.5 |
| 30 | 2455729 | 2011-06-16 | 331.28 |
| 31 | 2456066 | 2012-05-18 | 330.78 |
| 32 | 2456404 | 2013-04-21 | 331.79 |
| 33 | 2456727 | 2014-03-10 | 332.08 |
| 34 | 2457041 | 2015-01-18 | 332.78 |
| 35 | 2457391 | 2016-01-03 | 333.42 |
| 36 | 2457722 | 2016-11-29 | 334.5 |
| 37 | 2458057 | 2017-10-30 | 336.79 |
| 38 | 2458397 | 2018-10-05 | 337.79 |
| 39 | 2458741 | 2019-09-14 | 337.42 |
| 40 | 2459073 | 2020-08-11 | 338.53 |
| 41 | 2459410 | 2021-07-14 | 338.92 |
| 42 | 2459751 | 2022-06-20 | 338.72 |
| E | Cycle number from the GCVS4 epoch. |
| O (JD) | Julian date at observed time for maximum. |
| O (Dat) | Same as above, expressed as date. |
| Period | Calculated mean period at cycle number E. |