| E | O (JD) | O (dat) | Period |
| -82 | 2411146 | 1889-05-23 | 336.43 |
| -81 | 2411490 | 1890-05-02 | 336.49 |
| -74 | 2413840 | 1896-10-07 | 336.78 |
| -72 | 2414500 | 1898-07-29 | 336.87 |
| -71 | 2414853 | 1899-07-17 | 336.64 |
| -70 | 2415193 | 1900-06-22 | 336.32 |
| -69 | 2415524 | 1901-05-19 | 336.01 |
| -68 | 2415870 | 1902-04-30 | 336.95 |
| -67 | 2416203 | 1903-03-29 | 337.6 |
| -66 | 2416526 | 1904-02-15 | 337.94 |
| -65 | 2416855 | 1905-01-09 | 338.67 |
| -64 | 2417200 | 1905-12-20 | 339.31 |
| -63 | 2417560 | 1906-12-15 | 339.76 |
| -56 | 2419915 | 1913-05-27 | 340.59 |
| -55 | 2420265 | 1914-05-12 | 341.38 |
| -54 | 2420614 | 1915-04-26 | 341.92 |
| -53 | 2420956 | 1916-04-02 | 342.1 |
| -52 | 2421298 | 1917-03-10 | 342.85 |
| -51 | 2421650 | 1918-02-25 | 346.16 |
| -50 | 2421994 | 1919-02-04 | 346.17 |
| -49 | 2422341 | 1920-01-17 | 346.12 |
| -46 | 2423364 | 1922-11-05 | 346.19 |
| -45 | 2423722 | 1923-10-29 | 346.34 |
| -40 | 2425464 | 1928-08-05 | 346.25 |
| -39 | 2425803 | 1929-07-10 | 346.16 |
| -38 | 2426144 | 1930-06-16 | 346.16 |
| -37 | 2426491 | 1931-05-29 | 345.95 |
| -36 | 2426844 | 1932-05-16 | 344.61 |
| -35 | 2427184 | 1933-04-21 | 342.74 |
| -34 | 2427522 | 1934-03-25 | 341.98 |
| -33 | 2427873 | 1935-03-11 | 341.54 |
| -32 | 2428208 | 1936-02-09 | 340.95 |
| -31 | 2428546 | 1937-01-12 | 340.04 |
| -30 | 2428883 | 1937-12-15 | 339.25 |
| -29 | 2429219 | 1938-11-16 | 338.58 |
| -28 | 2429570 | 1939-11-02 | 337.85 |
| -27 | 2429911 | 1940-10-08 | 338.93 |
| -26 | 2430241 | 1941-09-03 | 339.93 |
| -25 | 2430570 | 1942-07-29 | 339.29 |
| -24 | 2430910 | 1943-07-04 | 338.87 |
| -23 | 2431248 | 1944-06-06 | 338.42 |
| -22 | 2431612 | 1945-06-05 | 339.11 |
| -21 | 2431956 | 1946-05-15 | 340.64 |
| -20 | 2432264 | 1947-03-19 | 341.45 |
| -19 | 2432608 | 1948-02-26 | 342.67 |
| -18 | 2432949 | 1949-02-01 | 342.89 |
| -17 | 2433299 | 1950-01-17 | 342.75 |
| -16 | 2433654 | 1951-01-07 | 344.61 |
| -15 | 2433991 | 1951-12-10 | 346.84 |
| -14 | 2434355 | 1952-12-08 | 347.55 |
| -13 | 2434682 | 1953-10-31 | 347.95 |
| -12 | 2435023 | 1954-10-07 | 348.36 |
| -11 | 2435385 | 1955-10-04 | 348.64 |
| -10 | 2435735 | 1956-09-18 | 348.91 |
| -9 | 2436088 | 1957-09-06 | 348.6 |
| -8 | 2436433 | 1958-08-17 | 350 |
| -7 | 2436789 | 1959-08-08 | 349.65 |
| -6 | 2437134 | 1960-07-18 | 348.47 |
| -5 | 2437475 | 1961-06-24 | 348.42 |
| -4 | 2437822 | 1962-06-06 | 347.95 |
| -3 | 2438189 | 1963-06-08 | 347.25 |
| -2 | 2438525 | 1964-05-09 | 346.35 |
| -1 | 2438866 | 1965-04-15 | 345.75 |
| 0 | 2439225 | 1966-04-09 | 344.98 |
| 1 | 2439564 | 1967-03-14 | 344 |
| 2 | 2439901 | 1968-02-14 | 342.86 |
| 3 | 2440245 | 1969-01-23 | 343.45 |
| 4 | 2440587 | 1969-12-31 | 343.14 |
| 5 | 2440929 | 1970-12-08 | 342.53 |
| 6 | 2441274 | 1971-11-18 | 342.66 |
| 7 | 2441614 | 1972-10-23 | 342.12 |
| 8 | 2441970 | 1973-10-14 | 341 |
| 9 | 2442303 | 1974-09-12 | 339.41 |
| 10 | 2442643 | 1975-08-18 | 337.72 |
| 11 | 2442984 | 1976-07-24 | 336.24 |
| 12 | 2443314 | 1977-06-19 | 334.94 |
| 13 | 2443647 | 1978-05-18 | 333.88 |
| 14 | 2443973 | 1979-04-09 | 333.78 |
| 15 | 2444306 | 1980-03-07 | 333.95 |
| 16 | 2444644 | 1981-02-08 | 334.63 |
| 17 | 2444977 | 1982-01-07 | 335.92 |
| 18 | 2445315 | 1982-12-11 | 336.85 |
| 19 | 2445649 | 1983-11-10 | 338.72 |
| 20 | 2445991 | 1984-10-17 | 339.59 |
| 21 | 2446332 | 1985-09-23 | 339.89 |
| 22 | 2446674 | 1986-08-31 | 340.53 |
| 23 | 2447008 | 1987-07-31 | 340.87 |
| 24 | 2447368 | 1988-07-25 | 340.85 |
| 25 | 2447699 | 1989-06-21 | 340.78 |
| 26 | 2448032 | 1990-05-20 | 340.8 |
| 27 | 2448379 | 1991-05-02 | 340.76 |
| 28 | 2448720 | 1992-04-07 | 340.55 |
| 29 | 2449055 | 1993-03-08 | 340.25 |
| 30 | 2449401 | 1994-02-17 | 340.55 |
| 31 | 2449743 | 1995-01-25 | 340.51 |
| 32 | 2450083 | 1995-12-31 | 340.26 |
| 33 | 2450419 | 1996-12-01 | 340.94 |
| 34 | 2450765 | 1997-11-12 | 342 |
| 35 | 2451098 | 1998-10-11 | 342.95 |
| 36 | 2451439 | 1999-09-17 | 343.56 |
| 37 | 2451783 | 2000-08-26 | 344.34 |
| 38 | 2452137 | 2001-08-15 | 344.93 |
| 39 | 2452488 | 2002-08-01 | 344.64 |
| 40 | 2452837 | 2003-07-16 | 344.54 |
| 41 | 2453171 | 2004-06-14 | 343.98 |
| 42 | 2453518 | 2005-05-27 | 342.66 |
| 43 | 2453861 | 2006-05-05 | 341.25 |
| 44 | 2454194 | 2007-04-03 | 340.63 |
| 45 | 2454538 | 2008-03-12 | 339.98 |
| 46 | 2454883 | 2009-02-20 | 339.97 |
| 47 | 2455214 | 2010-01-17 | 339.42 |
| 48 | 2455554 | 2010-12-23 | 338.52 |
| 49 | 2455901 | 2011-12-05 | 338.17 |
| 50 | 2456232 | 2012-10-31 | 337.28 |
| 51 | 2456576 | 2013-10-10 | 336.32 |
| 52 | 2456911 | 2014-09-10 | 335.93 |
| 53 | 2457235 | 2015-07-31 | 336.04 |
| 54 | 2457579 | 2016-07-09 | 336.44 |
| 55 | 2457911 | 2017-06-06 | 337.49 |
| 56 | 2458240 | 2018-05-01 | 338.78 |
| 57 | 2458579 | 2019-04-05 | 340.61 |
| 58 | 2458932 | 2020-03-23 | 342.69 |
| 59 | 2459274 | 2021-02-28 | 343.44 |
| 60 | 2459616 | 2022-02-05 | 344.85 |
| 61 | 2459967 | 2023-01-22 | 346.25 |
| 62 | 2460313 | 2024-01-03 | 346.79 |
| 63 | 2460664 | 2024-12-19 | 346.51 |
| 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. |