| E | O (JD) | O (dat) | Period |
| -69 | 2414930 | 1899-10-02 | 343.03 |
| -68 | 2415260 | 1900-08-28 | 343.61 |
| -67 | 2415620 | 1901-08-23 | 347.73 |
| -66 | 2415945 | 1902-07-14 | 347.61 |
| -65 | 2416302 | 1903-07-06 | 347.37 |
| -64 | 2416641 | 1904-06-09 | 347.15 |
| -63 | 2416989 | 1905-05-23 | 347.42 |
| -51 | 2421180 | 1916-11-12 | 347.5 |
| -49 | 2421864 | 1918-09-27 | 347.63 |
| -47 | 2422550 | 1920-08-13 | 347.52 |
| -46 | 2422890 | 1921-07-19 | 347.62 |
| -45 | 2423253 | 1922-07-17 | 347.33 |
| -44 | 2423602 | 1923-07-01 | 346.24 |
| -43 | 2423937 | 1924-05-31 | 347 |
| -42 | 2424290 | 1925-05-19 | 347.68 |
| -41 | 2424640 | 1926-05-04 | 347.78 |
| -39 | 2425326 | 1928-03-20 | 347.66 |
| -38 | 2425673 | 1929-03-02 | 347.87 |
| -37 | 2426027 | 1930-02-19 | 348.42 |
| -36 | 2426382 | 1931-02-09 | 348.03 |
| -35 | 2426726 | 1932-01-19 | 347.59 |
| -34 | 2427078 | 1933-01-05 | 348.16 |
| -33 | 2427419 | 1933-12-12 | 348.69 |
| -32 | 2427772 | 1934-11-30 | 349.07 |
| -30 | 2428460 | 1936-10-18 | 349.54 |
| -29 | 2428800 | 1937-09-23 | 350.13 |
| -28 | 2429167 | 1938-09-25 | 349.98 |
| -27 | 2429527 | 1939-09-20 | 349.54 |
| -26 | 2429878 | 1940-09-05 | 348.71 |
| -25 | 2430227 | 1941-08-20 | 347.94 |
| -24 | 2430574 | 1942-08-02 | 346.64 |
| -23 | 2430910 | 1943-07-04 | 344.71 |
| -22 | 2431247 | 1944-06-05 | 343.46 |
| -21 | 2431594 | 1945-05-18 | 343.08 |
| -20 | 2431939 | 1946-04-28 | 343.05 |
| -19 | 2432284 | 1947-04-08 | 343.52 |
| -18 | 2432627 | 1948-03-16 | 344.69 |
| -17 | 2432967 | 1949-02-19 | 345.58 |
| -16 | 2433314 | 1950-02-01 | 345.45 |
| -15 | 2433658 | 1951-01-11 | 346.39 |
| -14 | 2434006 | 1951-12-25 | 347.34 |
| -13 | 2434361 | 1952-12-14 | 347.89 |
| -12 | 2434709 | 1953-11-27 | 348.89 |
| -11 | 2435042 | 1954-10-26 | 348.96 |
| -10 | 2435408 | 1955-10-27 | 349.05 |
| -9 | 2435757 | 1956-10-10 | 348.88 |
| -8 | 2436098 | 1957-09-16 | 348.67 |
| -7 | 2436459 | 1958-09-12 | 348.21 |
| -6 | 2436797 | 1959-08-16 | 348.1 |
| -5 | 2437147 | 1960-07-31 | 347.34 |
| -4 | 2437495 | 1961-07-14 | 347.42 |
| -3 | 2437844 | 1962-06-28 | 347.54 |
| -2 | 2438180 | 1963-05-30 | 347.27 |
| -1 | 2438534 | 1964-05-18 | 347.62 |
| 0 | 2438885 | 1965-05-04 | 347.5 |
| 1 | 2439233 | 1966-04-17 | 347.49 |
| 2 | 2439580 | 1967-03-30 | 347.51 |
| 3 | 2439927 | 1968-03-11 | 347.62 |
| 4 | 2440273 | 1969-02-20 | 347.13 |
| 5 | 2440620 | 1970-02-02 | 346.74 |
| 6 | 2440967 | 1971-01-15 | 347.06 |
| 7 | 2441314 | 1971-12-28 | 347.38 |
| 8 | 2441661 | 1972-12-09 | 347.74 |
| 9 | 2442008 | 1973-11-21 | 347.88 |
| 10 | 2442351 | 1974-10-30 | 347.93 |
| 11 | 2442709 | 1975-10-23 | 347.87 |
| 12 | 2443056 | 1976-10-04 | 347.73 |
| 13 | 2443405 | 1977-09-18 | 347.45 |
| 14 | 2443749 | 1978-08-28 | 347.21 |
| 15 | 2444096 | 1979-08-10 | 347.35 |
| 16 | 2444442 | 1980-07-21 | 347.11 |
| 17 | 2444788 | 1981-07-02 | 348.29 |
| 18 | 2445133 | 1982-06-12 | 349.43 |
| 19 | 2445481 | 1983-05-26 | 351.05 |
| 20 | 2445837 | 1984-05-16 | 352.13 |
| 21 | 2446183 | 1985-04-27 | 352.9 |
| 22 | 2446551 | 1986-04-30 | 353.15 |
| 23 | 2446902 | 1987-04-16 | 353.16 |
| 24 | 2447263 | 1988-04-11 | 351.86 |
| 25 | 2447610 | 1989-03-24 | 350.09 |
| 26 | 2447959 | 1990-03-08 | 348.28 |
| 27 | 2448305 | 1991-02-17 | 345.61 |
| 28 | 2448657 | 1992-02-04 | 344.57 |
| 29 | 2448988 | 1992-12-31 | 343.74 |
| 30 | 2449331 | 1993-12-09 | 343.96 |
| 31 | 2449673 | 1994-11-16 | 344.62 |
| 32 | 2450006 | 1995-10-15 | 345.66 |
| 33 | 2450365 | 1996-10-08 | 347.6 |
| 34 | 2450711 | 1997-09-19 | 349.57 |
| 35 | 2451063 | 1998-09-06 | 350.83 |
| 36 | 2451416 | 1999-08-25 | 351.43 |
| 37 | 2451767 | 2000-08-10 | 351.1 |
| 38 | 2452133 | 2001-08-11 | 349.95 |
| 39 | 2452477 | 2002-07-21 | 349.96 |
| 40 | 2452828 | 2003-07-07 | 349.48 |
| 41 | 2453170 | 2004-06-13 | 349.15 |
| 42 | 2453507 | 2005-05-16 | 348.9 |
| 43 | 2453856 | 2006-04-30 | 348.55 |
| 44 | 2454221 | 2007-04-30 | 348.56 |
| 45 | 2454566 | 2008-04-09 | 348.89 |
| 46 | 2454918 | 2009-03-27 | 349.38 |
| 47 | 2455267 | 2010-03-11 | 349.7 |
| 48 | 2455614 | 2011-02-21 | 348.71 |
| 49 | 2455952 | 2012-01-25 | 348.17 |
| 50 | 2456310 | 2013-01-17 | 348.24 |
| 51 | 2456659 | 2014-01-01 | 348.4 |
| 52 | 2457011 | 2014-12-19 | 348.33 |
| 53 | 2457346 | 2015-11-19 | 348.19 |
| 54 | 2457705 | 2016-11-12 | 348.24 |
| 55 | 2458050 | 2017-10-23 | 348.06 |
| 56 | 2458404 | 2018-10-12 | 348.05 |
| 57 | 2458744 | 2019-09-17 | 348.12 |
| 58 | 2459089 | 2020-08-27 | 348.65 |
| 59 | 2459441 | 2021-08-14 | 347.86 |
| 60 | 2459796 | 2022-08-04 | 348.17 |
| 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. |