| E | O (JD) | O (dat) | Period |
| -72 | 2413477 | 1895-10-10 | 410.96 |
| -71 | 2413841 | 1896-10-08 | 413.5 |
| -70 | 2414219 | 1897-10-21 | 415.76 |
| -68 | 2415080 | 1900-03-01 | 417.54 |
| -64 | 2416749 | 1904-09-25 | 418.33 |
| -63 | 2417128 | 1905-10-09 | 419.15 |
| -62 | 2417598 | 1907-01-22 | 422.33 |
| -61 | 2418038 | 1908-04-06 | 424.76 |
| -60 | 2418470 | 1909-06-12 | 424.76 |
| -59 | 2418878 | 1910-07-25 | 425.31 |
| -58 | 2419309 | 1911-09-29 | 426.94 |
| -57 | 2419734 | 1912-11-27 | 424.7 |
| -56 | 2420170 | 1914-02-06 | 425.04 |
| -55 | 2420561 | 1915-03-04 | 426.64 |
| -54 | 2420970 | 1916-04-16 | 427.84 |
| -53 | 2421458 | 1917-08-17 | 431.41 |
| -52 | 2421860 | 1918-09-23 | 434.01 |
| -51 | 2422299 | 1919-12-06 | 436.08 |
| -50 | 2422739 | 1921-02-18 | 438.32 |
| -49 | 2423152 | 1922-04-07 | 437.52 |
| -48 | 2423651 | 1923-08-19 | 435.21 |
| -47 | 2424067 | 1924-10-08 | 434.98 |
| -46 | 2424497 | 1925-12-12 | 433.97 |
| -45 | 2424930 | 1927-02-18 | 431.55 |
| -44 | 2425346 | 1928-04-09 | 429.29 |
| -43 | 2425779 | 1929-06-16 | 424.5 |
| -42 | 2426201 | 1930-08-12 | 424.47 |
| -41 | 2426650 | 1931-11-04 | 424.08 |
| -40 | 2427050 | 1932-12-08 | 423.08 |
| -39 | 2427476 | 1934-02-07 | 422.39 |
| -38 | 2427872 | 1935-03-10 | 421.57 |
| -37 | 2428322 | 1936-06-02 | 420.41 |
| -36 | 2428749 | 1937-08-03 | 418.02 |
| -35 | 2429156 | 1938-09-14 | 417.55 |
| -34 | 2429575 | 1939-11-07 | 416.99 |
| -33 | 2430002 | 1941-01-07 | 416.68 |
| -32 | 2430406 | 1942-02-15 | 413.32 |
| -31 | 2430798 | 1943-03-14 | 412.98 |
| -30 | 2431221 | 1944-05-10 | 411.77 |
| -29 | 2431653 | 1945-07-16 | 410.25 |
| -28 | 2432068 | 1946-09-04 | 411.55 |
| -27 | 2432444 | 1947-09-15 | 414.12 |
| -26 | 2432885 | 1948-11-29 | 416.29 |
| -25 | 2433266 | 1949-12-15 | 417.23 |
| -24 | 2433674 | 1951-01-27 | 418.38 |
| -23 | 2434137 | 1952-05-04 | 421.15 |
| -22 | 2434565 | 1953-07-06 | 423.85 |
| -21 | 2434984 | 1954-08-29 | 423.95 |
| -20 | 2435402 | 1955-10-21 | 426.18 |
| -19 | 2435820 | 1956-12-12 | 425.79 |
| -18 | 2436257 | 1958-02-22 | 424.94 |
| -17 | 2436678 | 1959-04-19 | 426.07 |
| -16 | 2437092 | 1960-06-06 | 425.12 |
| -15 | 2437539 | 1961-08-27 | 424.81 |
| -14 | 2437955 | 1962-10-17 | 424.82 |
| -13 | 2438393 | 1963-12-29 | 424.15 |
| -12 | 2438825 | 1965-03-05 | 423.66 |
| -11 | 2439203 | 1966-03-18 | 423.49 |
| -10 | 2439642 | 1967-05-31 | 421.28 |
| -9 | 2440079 | 1968-08-10 | 422.4 |
| -8 | 2440498 | 1969-10-03 | 424.94 |
| -7 | 2440913 | 1970-11-22 | 426.05 |
| -6 | 2441346 | 1972-01-29 | 427.63 |
| -5 | 2441738 | 1973-02-24 | 427.78 |
| -4 | 2442204 | 1974-06-05 | 428.41 |
| -3 | 2442669 | 1975-09-13 | 430.23 |
| -2 | 2443055 | 1976-10-03 | 430.74 |
| -1 | 2443479 | 1977-12-01 | 430.87 |
| 0 | 2443925 | 1979-02-20 | 430.47 |
| 1 | 2444353 | 1980-04-23 | 428.05 |
| 2 | 2444797 | 1981-07-11 | 427.83 |
| 3 | 2445209 | 1982-08-27 | 429.35 |
| 4 | 2445645 | 1983-11-06 | 429.35 |
| 5 | 2446060 | 1984-12-25 | 428.77 |
| 6 | 2446488 | 1986-02-26 | 428.04 |
| 7 | 2446927 | 1987-05-11 | 426.99 |
| 8 | 2447352 | 1988-07-09 | 427.45 |
| 9 | 2447792 | 1989-09-22 | 426.75 |
| 10 | 2448218 | 1990-11-22 | 427.46 |
| 11 | 2448627 | 1992-01-05 | 426.9 |
| 12 | 2449047 | 1993-02-28 | 425.81 |
| 13 | 2449486 | 1994-05-13 | 424.54 |
| 14 | 2449904 | 1995-07-05 | 423.83 |
| 15 | 2450351 | 1996-09-24 | 422.55 |
| 16 | 2450766 | 1997-11-13 | 421.75 |
| 17 | 2451182 | 1999-01-03 | 420.81 |
| 18 | 2451590 | 2000-02-15 | 419.7 |
| 19 | 2452025 | 2001-04-25 | 420.13 |
| 20 | 2452419 | 2002-05-24 | 418.78 |
| 21 | 2452844 | 2003-07-23 | 418.87 |
| 22 | 2453275 | 2004-09-26 | 419.23 |
| 23 | 2453697 | 2005-11-22 | 419.03 |
| 24 | 2454134 | 2007-02-02 | 419.13 |
| 25 | 2454523 | 2008-02-26 | 418.75 |
| 26 | 2454942 | 2009-04-20 | 416.76 |
| 27 | 2455368 | 2010-06-20 | 415.84 |
| 28 | 2455777 | 2011-08-03 | 414.05 |
| 29 | 2456213 | 2012-10-12 | 413.87 |
| 30 | 2456605 | 2013-11-08 | 415.88 |
| 31 | 2457013 | 2014-12-21 | 416.85 |
| 32 | 2457445 | 2016-02-26 | 418.15 |
| 33 | 2457829 | 2017-03-16 | 419.48 |
| 34 | 2458269 | 2018-05-30 | 420.08 |
| 35 | 2458707 | 2019-08-11 | 422.52 |
| 36 | 2459132 | 2020-10-09 | 424.02 |
| 37 | 2459558 | 2021-12-09 | 424.96 |
| 38 | 2459971 | 2023-01-26 | 428.63 |
| 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. |