| E | O (JD) | O (dat) | Period |
| -71 | 2414935 | 1899-10-07 | 343.61 |
| -69 | 2415629 | 1901-09-01 | 341.8 |
| -68 | 2415977 | 1902-08-15 | 338.4 |
| -67 | 2416330 | 1903-08-03 | 337.98 |
| -66 | 2416660 | 1904-06-28 | 338.26 |
| -65 | 2416992 | 1905-05-26 | 337.92 |
| -64 | 2417327 | 1906-04-26 | 337.63 |
| -61 | 2418321 | 1909-01-14 | 337.58 |
| -60 | 2418671 | 1909-12-30 | 337.32 |
| -59 | 2419020 | 1910-12-14 | 338.04 |
| -58 | 2419344 | 1911-11-03 | 338.12 |
| -57 | 2419710 | 1912-11-03 | 338.61 |
| -56 | 2420040 | 1913-09-29 | 338.52 |
| -55 | 2420363 | 1914-08-18 | 337.12 |
| -54 | 2420710 | 1915-07-31 | 336.58 |
| -53 | 2421034 | 1916-06-19 | 337 |
| -52 | 2421386 | 1917-06-06 | 337.67 |
| -51 | 2421711 | 1918-04-27 | 339.52 |
| -50 | 2422046 | 1919-03-28 | 340.93 |
| -49 | 2422390 | 1920-03-06 | 341.98 |
| -48 | 2422736 | 1921-02-15 | 343.19 |
| -47 | 2423096 | 1922-02-10 | 343.51 |
| -46 | 2423433 | 1923-01-13 | 344.71 |
| -45 | 2423772 | 1923-12-18 | 344.65 |
| -44 | 2424123 | 1924-12-03 | 344.45 |
| -43 | 2424462 | 1925-11-07 | 343.86 |
| -42 | 2424804 | 1926-10-15 | 343.47 |
| -41 | 2425155 | 1927-10-01 | 343.57 |
| -40 | 2425491 | 1928-09-01 | 343.35 |
| -39 | 2425842 | 1929-08-18 | 343.95 |
| -38 | 2426180 | 1930-07-22 | 344.37 |
| -37 | 2426527 | 1931-07-04 | 344.89 |
| -36 | 2426864 | 1932-06-05 | 345.09 |
| -35 | 2427206 | 1933-05-13 | 345.78 |
| -34 | 2427572 | 1934-05-14 | 346.07 |
| -33 | 2427907 | 1935-04-14 | 346.86 |
| -32 | 2428259 | 1936-03-31 | 346.72 |
| -31 | 2428601 | 1937-03-08 | 346.06 |
| -30 | 2428950 | 1938-02-20 | 345.57 |
| -29 | 2429297 | 1939-02-02 | 344.84 |
| -28 | 2429648 | 1940-01-19 | 345.04 |
| -27 | 2429983 | 1940-12-19 | 344.5 |
| -26 | 2430316 | 1941-11-17 | 343.84 |
| -25 | 2430673 | 1942-11-09 | 343.35 |
| -24 | 2431019 | 1943-10-21 | 342.48 |
| -23 | 2431363 | 1944-09-29 | 341.99 |
| -22 | 2431703 | 1945-09-04 | 342.15 |
| -21 | 2432037 | 1946-08-04 | 341.69 |
| -20 | 2432386 | 1947-07-19 | 340.89 |
| -19 | 2432716 | 1948-06-13 | 340.36 |
| -18 | 2433061 | 1949-05-24 | 339.83 |
| -17 | 2433407 | 1950-05-05 | 339.51 |
| -16 | 2433743 | 1951-04-06 | 339.24 |
| -15 | 2434088 | 1952-03-16 | 338.1 |
| -14 | 2434420 | 1953-02-11 | 337.9 |
| -13 | 2434754 | 1954-01-11 | 337.26 |
| -12 | 2435093 | 1954-12-16 | 337.25 |
| -11 | 2435432 | 1955-11-20 | 337.06 |
| -10 | 2435758 | 1956-10-11 | 336.83 |
| -9 | 2436104 | 1957-09-22 | 337.07 |
| -8 | 2436442 | 1958-08-26 | 337.29 |
| -7 | 2436787 | 1959-08-06 | 337.1 |
| -6 | 2437113 | 1960-06-27 | 337.15 |
| -5 | 2437450 | 1961-05-30 | 337.63 |
| -4 | 2437788 | 1962-05-03 | 337.76 |
| -3 | 2438129 | 1963-04-09 | 338.31 |
| -2 | 2438461 | 1964-03-06 | 339.15 |
| -1 | 2438801 | 1965-02-09 | 339.43 |
| 0 | 2439145 | 1966-01-19 | 339.09 |
| 1 | 2439489 | 1966-12-29 | 339.1 |
| 2 | 2439829 | 1967-12-04 | 339.05 |
| 3 | 2440175 | 1968-11-14 | 339.47 |
| 4 | 2440495 | 1969-09-30 | 339.49 |
| 5 | 2440832 | 1970-09-02 | 339.79 |
| 6 | 2441179 | 1971-08-15 | 340.25 |
| 7 | 2441518 | 1972-07-19 | 340.82 |
| 8 | 2441865 | 1973-07-01 | 341.35 |
| 9 | 2442205 | 1974-06-06 | 342.37 |
| 10 | 2442552 | 1975-05-19 | 342.29 |
| 11 | 2442893 | 1976-04-24 | 341.95 |
| 12 | 2443232 | 1977-03-29 | 341.88 |
| 13 | 2443572 | 1978-03-04 | 341.7 |
| 14 | 2443916 | 1979-02-11 | 342.12 |
| 15 | 2444256 | 1980-01-17 | 342 |
| 16 | 2444598 | 1980-12-24 | 342.83 |
| 17 | 2444941 | 1981-12-02 | 343.55 |
| 18 | 2445284 | 1982-11-10 | 344.35 |
| 19 | 2445634 | 1983-10-26 | 345.68 |
| 20 | 2445968 | 1984-09-24 | 347.04 |
| 21 | 2446325 | 1985-09-16 | 347.83 |
| 22 | 2446668 | 1986-08-25 | 348.37 |
| 23 | 2447018 | 1987-08-10 | 348.73 |
| 24 | 2447379 | 1988-08-05 | 349.03 |
| 25 | 2447728 | 1989-07-20 | 349.16 |
| 26 | 2448070 | 1990-06-27 | 348.6 |
| 27 | 2448417 | 1991-06-09 | 348.41 |
| 28 | 2448765 | 1992-05-22 | 348 |
| 29 | 2449117 | 1993-05-09 | 347.83 |
| 30 | 2449460 | 1994-04-17 | 347.87 |
| 31 | 2449809 | 1995-04-01 | 348.04 |
| 32 | 2450157 | 1996-03-14 | 348.13 |
| 33 | 2450507 | 1997-02-27 | 348.28 |
| 34 | 2450860 | 1998-02-15 | 348.88 |
| 35 | 2451200 | 1999-01-21 | 349.14 |
| 36 | 2451548 | 2000-01-04 | 348.54 |
| 37 | 2451900 | 2000-12-21 | 347.88 |
| 38 | 2452251 | 2001-12-07 | 347.25 |
| 39 | 2452610 | 2002-12-01 | 346.7 |
| 40 | 2452949 | 2003-11-05 | 346.13 |
| 41 | 2453285 | 2004-10-06 | 345.26 |
| 42 | 2453630 | 2005-09-16 | 344.22 |
| 43 | 2453977 | 2006-08-29 | 343.65 |
| 44 | 2454323 | 2007-08-10 | 343.12 |
| 45 | 2454662 | 2008-07-14 | 343.09 |
| 46 | 2455008 | 2009-06-25 | 342.72 |
| 47 | 2455348 | 2010-05-31 | 342.07 |
| 48 | 2455696 | 2011-05-14 | 341.72 |
| 49 | 2456035 | 2012-04-17 | 341.8 |
| 50 | 2456372 | 2013-03-20 | 342.22 |
| 51 | 2456710 | 2014-02-21 | 342.91 |
| 52 | 2457053 | 2015-01-30 | 343.76 |
| 53 | 2457399 | 2016-01-11 | 344.55 |
| 54 | 2457746 | 2016-12-23 | 345.52 |
| 55 | 2458092 | 2017-12-04 | 346.47 |
| 56 | 2458445 | 2018-11-22 | 347.03 |
| 57 | 2458790 | 2019-11-02 | 347.3 |
| 58 | 2459137 | 2020-10-14 | 347.37 |
| 59 | 2459481 | 2021-09-23 | 347.32 |
| 60 | 2459831 | 2022-09-08 | 347.14 |
| 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. |