| E | O (JD) | O (dat) | Period |
| -117 | 2405154 | 1872-12-26 | 322 |
| -116 | 2405485 | 1873-11-22 | 322.95 |
| -115 | 2405792 | 1874-09-25 | 323.75 |
| -113 | 2406447 | 1876-07-11 | 323.25 |
| -110 | 2407410 | 1879-03-01 | 322.6 |
| -109 | 2407743 | 1880-01-28 | 323.06 |
| -108 | 2408063 | 1880-12-13 | 321.78 |
| -107 | 2408386 | 1881-11-01 | 320 |
| -106 | 2408705 | 1882-09-16 | 319.5 |
| -105 | 2409033 | 1883-08-10 | 317.67 |
| -101 | 2410285 | 1887-01-13 | 317.43 |
| -100 | 2410612 | 1887-12-06 | 318.79 |
| -99 | 2410931 | 1888-10-20 | 318.93 |
| -94 | 2412499 | 1893-02-04 | 319.26 |
| -93 | 2412838 | 1894-01-09 | 320.53 |
| -92 | 2413179 | 1894-12-16 | 320.47 |
| -91 | 2413489 | 1895-10-22 | 322 |
| -85 | 2415407 | 1901-01-22 | 323.75 |
| -84 | 2415747 | 1901-12-28 | 322.71 |
| -83 | 2416051 | 1902-10-28 | 321.61 |
| -82 | 2416395 | 1903-10-07 | 321.26 |
| -81 | 2416712 | 1904-08-19 | 321.06 |
| -80 | 2417050 | 1905-07-23 | 320.89 |
| -77 | 2417980 | 1908-02-08 | 318.94 |
| -76 | 2418305 | 1908-12-29 | 316.27 |
| -75 | 2418628 | 1909-11-17 | 314.83 |
| -74 | 2418946 | 1910-10-01 | 315.14 |
| -72 | 2419560 | 1912-06-06 | 317.1 |
| -69 | 2420505 | 1915-01-07 | 316.75 |
| -68 | 2420813 | 1915-11-11 | 315.59 |
| -67 | 2421150 | 1916-10-13 | 316.69 |
| -66 | 2421477 | 1917-09-05 | 321.57 |
| -65 | 2421791 | 1918-07-16 | 325.01 |
| -64 | 2422095 | 1919-05-16 | 323.36 |
| -63 | 2422428 | 1920-04-13 | 322.43 |
| -62 | 2422782 | 1921-04-02 | 323.36 |
| -61 | 2423086 | 1922-01-31 | 325.43 |
| -60 | 2423404 | 1922-12-15 | 326.35 |
| -59 | 2423737 | 1923-11-13 | 324.5 |
| -58 | 2424058 | 1924-09-29 | 324.64 |
| -57 | 2424384 | 1925-08-21 | 324.29 |
| -56 | 2424708 | 1926-07-11 | 322.65 |
| -55 | 2425045 | 1927-06-13 | 322.29 |
| -54 | 2425368 | 1928-05-01 | 321.51 |
| -53 | 2425662 | 1929-02-19 | 320.93 |
| -52 | 2425996 | 1930-01-19 | 318.85 |
| -51 | 2426311 | 1930-11-30 | 315.28 |
| -50 | 2426632 | 1931-10-17 | 315.56 |
| -49 | 2426953 | 1932-09-02 | 317.14 |
| -48 | 2427264 | 1933-07-10 | 316.78 |
| -47 | 2427563 | 1934-05-05 | 315.93 |
| -46 | 2427885 | 1935-03-23 | 314.79 |
| -45 | 2428213 | 1936-02-14 | 314.86 |
| -44 | 2428529 | 1936-12-26 | 316.72 |
| -43 | 2428837 | 1937-10-30 | 318.43 |
| -42 | 2429155 | 1938-09-13 | 317.93 |
| -41 | 2429470 | 1939-07-25 | 317.43 |
| -40 | 2429791 | 1940-06-10 | 319.06 |
| -39 | 2430115 | 1941-04-30 | 319.99 |
| -38 | 2430434 | 1942-03-15 | 320.06 |
| -37 | 2430752 | 1943-01-27 | 320.36 |
| -36 | 2431081 | 1943-12-22 | 320.08 |
| -35 | 2431391 | 1944-10-27 | 319.44 |
| -34 | 2431715 | 1945-09-16 | 318.65 |
| -33 | 2432031 | 1946-07-29 | 318.29 |
| -32 | 2432356 | 1947-06-19 | 319.21 |
| -31 | 2432665 | 1948-04-23 | 318.71 |
| -30 | 2432982 | 1949-03-06 | 317.71 |
| -29 | 2433307 | 1950-01-25 | 317.64 |
| -28 | 2433634 | 1950-12-18 | 317.99 |
| -27 | 2433934 | 1951-10-14 | 318.79 |
| -26 | 2434260 | 1952-09-04 | 318.08 |
| -25 | 2434574 | 1953-07-15 | 318.44 |
| -24 | 2434899 | 1954-06-05 | 320.94 |
| -23 | 2435211 | 1955-04-13 | 322.21 |
| -22 | 2435531 | 1956-02-27 | 322.5 |
| -21 | 2435868 | 1957-01-29 | 322.71 |
| -20 | 2436193 | 1957-12-20 | 323.42 |
| -19 | 2436512 | 1958-11-04 | 324.92 |
| -18 | 2436837 | 1959-09-25 | 324.42 |
| -17 | 2437154 | 1960-08-07 | 323.43 |
| -16 | 2437484 | 1961-07-03 | 324.08 |
| -15 | 2437807 | 1962-05-22 | 325.51 |
| -14 | 2438134 | 1963-04-14 | 325.65 |
| -13 | 2438455 | 1964-02-29 | 325.07 |
| -12 | 2438787 | 1965-01-26 | 325.86 |
| -11 | 2439119 | 1965-12-24 | 325.14 |
| -10 | 2439431 | 1966-11-01 | 323.42 |
| -9 | 2439758 | 1967-09-24 | 324.21 |
| -8 | 2440095 | 1968-08-26 | 323 |
| -7 | 2440398 | 1969-06-25 | 321.43 |
| -6 | 2440719 | 1970-05-12 | 321.44 |
| -5 | 2441062 | 1971-04-20 | 319.29 |
| -4 | 2441366 | 1972-02-18 | 318.29 |
| -3 | 2441684 | 1973-01-01 | 319.36 |
| -2 | 2442005 | 1973-11-18 | 317.99 |
| -1 | 2442318 | 1974-09-27 | 316.64 |
| 0 | 2442631 | 1975-08-06 | 316.28 |
| 1 | 2442957 | 1976-06-27 | 315.71 |
| 2 | 2443276 | 1977-05-12 | 315.78 |
| 3 | 2443585 | 1978-03-17 | 316 |
| 4 | 2443893 | 1979-01-19 | 315.72 |
| 5 | 2444216 | 1979-12-08 | 314.58 |
| 6 | 2444528 | 1980-10-15 | 314.22 |
| 7 | 2444845 | 1981-08-28 | 315.71 |
| 8 | 2445163 | 1982-07-12 | 316.57 |
| 9 | 2445474 | 1983-05-19 | 317.64 |
| 10 | 2445786 | 1984-03-26 | 318.56 |
| 11 | 2446112 | 1985-02-15 | 318.28 |
| 12 | 2446429 | 1985-12-29 | 319.99 |
| 13 | 2446762 | 1986-11-27 | 322.07 |
| 14 | 2447071 | 1987-10-02 | 323.15 |
| 15 | 2447393 | 1988-08-19 | 323.36 |
| 16 | 2447724 | 1989-07-16 | 322.51 |
| 17 | 2448045 | 1990-06-02 | 322.5 |
| 18 | 2448377 | 1991-04-30 | 323.29 |
| 19 | 2448691 | 1992-03-09 | 323.07 |
| 20 | 2449015 | 1993-01-27 | 321.21 |
| 21 | 2449333 | 1993-12-11 | 318.85 |
| 22 | 2449657 | 1994-10-31 | 318.14 |
| 23 | 2449983 | 1995-09-22 | 317.86 |
| 24 | 2450283 | 1996-07-18 | 317.58 |
| 25 | 2450603 | 1997-06-03 | 317.36 |
| 26 | 2450919 | 1998-04-15 | 316.22 |
| 27 | 2451237 | 1999-02-27 | 316.29 |
| 28 | 2451557 | 2000-01-13 | 317.29 |
| 29 | 2451876 | 2000-11-27 | 317.21 |
| 30 | 2452191 | 2001-10-08 | 318.49 |
| 31 | 2452503 | 2002-08-16 | 319.06 |
| 32 | 2452825 | 2003-07-04 | 318.85 |
| 33 | 2453138 | 2004-05-12 | 319.79 |
| 34 | 2453477 | 2005-04-16 | 321.29 |
| 35 | 2453784 | 2006-02-17 | 322.08 |
| 36 | 2454113 | 2007-01-12 | 322.22 |
| 37 | 2454431 | 2007-11-26 | 321.5 |
| 38 | 2454761 | 2008-10-21 | 320.93 |
| 39 | 2455076 | 2009-09-01 | 321.86 |
| 40 | 2455398 | 2010-07-20 | 321.64 |
| 41 | 2455718 | 2011-06-05 | 321.14 |
| 42 | 2456036 | 2012-04-18 | 322.21 |
| 43 | 2456367 | 2013-03-15 | 324 |
| 44 | 2456680 | 2014-01-22 | 323.86 |
| 45 | 2457008 | 2014-12-16 | 323.58 |
| 46 | 2457340 | 2015-11-13 | 323.79 |
| 47 | 2457670 | 2016-10-08 | 323.43 |
| 48 | 2457980 | 2017-08-14 | 322.71 |
| 49 | 2458304 | 2018-07-04 | 320.64 |
| 50 | 2458632 | 2019-05-28 | 318.85 |
| 51 | 2458943 | 2020-04-03 | 319.3 |
| 52 | 2459263 | 2021-02-17 | 320.1 |
| 53 | 2459574 | 2021-12-25 | 317.32 |
| 54 | 2459900 | 2022-11-16 | 315.19 |
| 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. |