| E | O (JD) | O (dat) | Period |
| -65 | 2412929 | 1894-04-10 | 451.85 |
| -63 | 2413855 | 1896-10-22 | 452.55 |
| -56 | 2417007 | 1905-06-10 | 452.78 |
| -55 | 2417457 | 1906-09-03 | 452.92 |
| -54 | 2417916 | 1907-12-06 | 452.26 |
| -53 | 2418354 | 1909-02-16 | 451.92 |
| -52 | 2418836 | 1910-06-13 | 451.69 |
| -51 | 2419281 | 1911-09-01 | 453.34 |
| -50 | 2419733 | 1912-11-26 | 454.52 |
| -49 | 2420153 | 1914-01-20 | 456.56 |
| -48 | 2420611 | 1915-04-23 | 457.64 |
| -47 | 2421095 | 1916-08-19 | 458.16 |
| -46 | 2421554 | 1917-11-21 | 460.84 |
| -45 | 2422017 | 1919-02-27 | 462.67 |
| -44 | 2422498 | 1920-06-22 | 464.14 |
| -43 | 2422934 | 1921-09-01 | 462.86 |
| -42 | 2423400 | 1922-12-11 | 461.54 |
| -41 | 2423878 | 1924-04-02 | 461.85 |
| -40 | 2424334 | 1925-07-02 | 460.85 |
| -39 | 2424794 | 1926-10-05 | 459.49 |
| -38 | 2425242 | 1927-12-27 | 459.14 |
| -37 | 2425709 | 1929-04-07 | 457.75 |
| -36 | 2426184 | 1930-07-26 | 457.01 |
| -35 | 2426622 | 1931-10-07 | 458.04 |
| -34 | 2427072 | 1932-12-30 | 458.74 |
| -33 | 2427528 | 1934-03-31 | 458.65 |
| -32 | 2427988 | 1935-07-04 | 457.33 |
| -31 | 2428454 | 1936-10-12 | 456.01 |
| -30 | 2428930 | 1938-01-31 | 458.78 |
| -29 | 2429386 | 1939-05-02 | 458.48 |
| -28 | 2429827 | 1940-07-16 | 456.68 |
| -27 | 2430269 | 1941-10-01 | 455.05 |
| -26 | 2430714 | 1942-12-20 | 454.26 |
| -25 | 2431235 | 1944-05-24 | 454.35 |
| -24 | 2431652 | 1945-07-15 | 455.3 |
| -23 | 2432085 | 1946-09-21 | 454.7 |
| -22 | 2432544 | 1947-12-24 | 454.7 |
| -21 | 2433014 | 1949-04-07 | 454.44 |
| -20 | 2433479 | 1950-07-16 | 452.33 |
| -19 | 2433932 | 1951-10-12 | 452.38 |
| -18 | 2434351 | 1952-12-04 | 452.45 |
| -17 | 2434828 | 1954-03-26 | 452.3 |
| -16 | 2435292 | 1955-07-03 | 450.06 |
| -15 | 2435722 | 1956-09-05 | 448.82 |
| -14 | 2436146 | 1957-11-03 | 449.02 |
| -13 | 2436628 | 1959-02-28 | 450.58 |
| -12 | 2437099 | 1960-06-13 | 450.01 |
| -11 | 2437505 | 1961-07-24 | 451.03 |
| -10 | 2437955 | 1962-10-17 | 453.32 |
| -9 | 2438417 | 1964-01-22 | 454.25 |
| -8 | 2438891 | 1965-05-10 | 453.45 |
| -7 | 2439333 | 1966-07-26 | 454.1 |
| -6 | 2439792 | 1967-10-28 | 455.95 |
| -5 | 2440256 | 1969-02-03 | 455.45 |
| -4 | 2440703 | 1970-04-26 | 455.38 |
| -3 | 2441152 | 1971-07-19 | 454.46 |
| -2 | 2441607 | 1972-10-16 | 454.65 |
| -1 | 2442064 | 1974-01-16 | 456.05 |
| 0 | 2442518 | 1975-04-15 | 457.05 |
| 1 | 2442990 | 1976-07-30 | 457.75 |
| 2 | 2443424 | 1977-10-07 | 459.36 |
| 3 | 2443881 | 1979-01-07 | 460.65 |
| 4 | 2444375 | 1980-05-15 | 461.04 |
| 5 | 2444824 | 1981-08-07 | 461.19 |
| 6 | 2445267 | 1982-10-24 | 460.45 |
| 7 | 2445753 | 1984-02-22 | 461.85 |
| 8 | 2446217 | 1985-05-31 | 459.01 |
| 9 | 2446664 | 1986-08-21 | 456.14 |
| 10 | 2447122 | 1987-11-22 | 455.19 |
| 11 | 2447569 | 1989-02-11 | 454.33 |
| 12 | 2448060 | 1990-06-17 | 452.5 |
| 13 | 2448460 | 1991-07-22 | 451.13 |
| 14 | 2448918 | 1992-10-22 | 450.69 |
| 15 | 2449375 | 1994-01-22 | 450.01 |
| 16 | 2449838 | 1995-04-30 | 449.34 |
| 17 | 2450288 | 1996-07-23 | 449.07 |
| 18 | 2450719 | 1997-09-27 | 449.44 |
| 19 | 2451176 | 1998-12-28 | 448.86 |
| 20 | 2451626 | 2000-03-22 | 450 |
| 21 | 2452069 | 2001-06-08 | 451.08 |
| 22 | 2452531 | 2002-09-13 | 453.79 |
| 23 | 2452948 | 2003-11-04 | 454.21 |
| 24 | 2453425 | 2005-02-23 | 454.32 |
| 25 | 2453906 | 2006-06-19 | 454.99 |
| 26 | 2454354 | 2007-09-10 | 454.54 |
| 27 | 2454830 | 2008-12-29 | 453.36 |
| 28 | 2455238 | 2010-02-10 | 452.7 |
| 29 | 2455704 | 2011-05-22 | 450.59 |
| 30 | 2456165 | 2012-08-25 | 449.64 |
| 31 | 2456598 | 2013-11-01 | 449.53 |
| 32 | 2457045 | 2015-01-22 | 451.16 |
| 33 | 2457497 | 2016-04-18 | 453.19 |
| 34 | 2457958 | 2017-07-23 | 452.92 |
| 35 | 2458413 | 2018-10-21 | 453.5 |
| 36 | 2458852 | 2020-01-03 | 455.45 |
| 37 | 2459342 | 2021-05-07 | 456.43 |
| 38 | 2459777 | 2022-07-16 | 456.89 |
| 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. |