| E | O (JD) | O (dat) | Period |
| -86 | 2411626 | 1890-09-15 | 353.09 |
| -83 | 2412688 | 1893-08-12 | 350.37 |
| -82 | 2413040 | 1894-07-30 | 349.21 |
| -81 | 2413381 | 1895-07-06 | 351.32 |
| -80 | 2413743 | 1896-07-02 | 350.06 |
| -79 | 2414077 | 1897-06-01 | 347.67 |
| -78 | 2414438 | 1898-05-28 | 347.89 |
| -77 | 2414789 | 1899-05-14 | 346.95 |
| -76 | 2415126 | 1900-04-16 | 346.75 |
| -74 | 2415817 | 1902-03-08 | 346.75 |
| -72 | 2416518 | 1904-02-07 | 345.05 |
| -70 | 2417198 | 1905-12-18 | 345.45 |
| -69 | 2417557 | 1906-12-12 | 345.63 |
| -68 | 2417893 | 1907-11-13 | 344.88 |
| -67 | 2418235 | 1908-10-20 | 344.13 |
| -66 | 2418589 | 1909-10-09 | 343.07 |
| -65 | 2418921 | 1910-09-06 | 344.07 |
| -64 | 2419277 | 1911-08-28 | 346 |
| -63 | 2419601 | 1912-07-17 | 346.36 |
| -62 | 2419957 | 1913-07-08 | 346.93 |
| -61 | 2420310 | 1914-06-26 | 347.28 |
| -60 | 2420662 | 1915-06-13 | 348.5 |
| -59 | 2421011 | 1916-05-27 | 349.93 |
| -58 | 2421356 | 1917-05-07 | 349 |
| -57 | 2421704 | 1918-04-20 | 348.86 |
| -56 | 2422053 | 1919-04-04 | 350.14 |
| -55 | 2422404 | 1920-03-20 | 350.78 |
| -54 | 2422749 | 1921-02-28 | 351.21 |
| -53 | 2423107 | 1922-02-21 | 352.65 |
| -52 | 2423468 | 1923-02-17 | 352.65 |
| -51 | 2423810 | 1924-01-25 | 352.93 |
| -50 | 2424167 | 1925-01-16 | 353.14 |
| -49 | 2424527 | 1926-01-11 | 350.93 |
| -48 | 2424867 | 1926-12-17 | 349.65 |
| -47 | 2425227 | 1927-12-12 | 349.36 |
| -46 | 2425573 | 1928-11-22 | 347.85 |
| -45 | 2425915 | 1929-10-30 | 346 |
| -44 | 2426258 | 1930-10-08 | 344 |
| -43 | 2426610 | 1931-09-25 | 343.5 |
| -42 | 2426954 | 1932-09-03 | 344.58 |
| -41 | 2427284 | 1933-07-30 | 344.21 |
| -40 | 2427626 | 1934-07-07 | 343 |
| -39 | 2427983 | 1935-06-29 | 342.64 |
| -38 | 2428329 | 1936-06-09 | 343.58 |
| -37 | 2428663 | 1937-05-09 | 345.08 |
| -36 | 2429007 | 1938-04-18 | 345 |
| -35 | 2429354 | 1939-03-31 | 342.78 |
| -34 | 2429694 | 1940-03-05 | 342.71 |
| -33 | 2430047 | 1941-02-21 | 344.29 |
| -32 | 2430392 | 1942-02-01 | 345.36 |
| -31 | 2430719 | 1942-12-25 | 346.78 |
| -30 | 2431071 | 1943-12-12 | 346.78 |
| -29 | 2431419 | 1944-11-24 | 346.21 |
| -28 | 2431777 | 1945-11-17 | 348.22 |
| -27 | 2432126 | 1946-11-01 | 349.79 |
| -26 | 2432470 | 1947-10-11 | 350.35 |
| -25 | 2432816 | 1948-09-21 | 350.78 |
| -24 | 2433170 | 1949-09-10 | 349.71 |
| -23 | 2433517 | 1950-08-23 | 349.36 |
| -22 | 2433878 | 1951-08-19 | 349.58 |
| -21 | 2434229 | 1952-08-04 | 348.85 |
| -20 | 2434570 | 1953-07-11 | 348.71 |
| -19 | 2434917 | 1954-06-23 | 348.21 |
| -18 | 2435263 | 1955-06-04 | 346.08 |
| -17 | 2435607 | 1956-05-13 | 345.72 |
| -16 | 2435962 | 1957-05-03 | 346.64 |
| -15 | 2436308 | 1958-04-14 | 347.07 |
| -14 | 2436644 | 1959-03-16 | 347.5 |
| -13 | 2436995 | 1960-03-01 | 347.86 |
| -12 | 2437345 | 1961-02-14 | 346.93 |
| -11 | 2437694 | 1962-01-29 | 346.85 |
| -10 | 2438041 | 1963-01-11 | 347.28 |
| -9 | 2438398 | 1964-01-03 | 346.78 |
| -8 | 2438729 | 1964-11-29 | 346.58 |
| -7 | 2439079 | 1965-11-14 | 345.29 |
| -6 | 2439422 | 1966-10-23 | 343.5 |
| -5 | 2439773 | 1967-10-09 | 343.71 |
| -4 | 2440118 | 1968-09-18 | 344.85 |
| -3 | 2440451 | 1969-08-17 | 345.36 |
| -2 | 2440797 | 1970-07-29 | 344.65 |
| -1 | 2441142 | 1971-07-09 | 343.93 |
| 0 | 2441494 | 1972-06-25 | 345 |
| 1 | 2441842 | 1973-06-08 | 345.85 |
| 2 | 2442178 | 1974-05-10 | 345.5 |
| 3 | 2442528 | 1975-04-25 | 343.86 |
| 4 | 2442871 | 1976-04-02 | 343.71 |
| 5 | 2443219 | 1977-03-16 | 345.64 |
| 6 | 2443557 | 1978-02-17 | 347.35 |
| 7 | 2443893 | 1979-01-19 | 348.79 |
| 8 | 2444255 | 1980-01-16 | 349.22 |
| 9 | 2444604 | 1980-12-30 | 350.14 |
| 10 | 2444965 | 1981-12-26 | 351.85 |
| 11 | 2445317 | 1982-12-13 | 351.43 |
| 12 | 2445662 | 1983-11-23 | 349.5 |
| 13 | 2446016 | 1984-11-11 | 348.15 |
| 14 | 2446360 | 1985-10-21 | 346.71 |
| 15 | 2446708 | 1986-10-04 | 345.28 |
| 16 | 2447044 | 1987-09-05 | 343.5 |
| 17 | 2447399 | 1988-08-25 | 341.43 |
| 18 | 2447737 | 1989-07-29 | 339.86 |
| 19 | 2448076 | 1990-07-03 | 339.35 |
| 20 | 2448411 | 1991-06-03 | 338.28 |
| 21 | 2448745 | 1992-05-02 | 337.43 |
| 22 | 2449081 | 1993-04-03 | 338.5 |
| 23 | 2449422 | 1994-03-10 | 339 |
| 24 | 2449757 | 1995-02-08 | 339.64 |
| 25 | 2450103 | 1996-01-20 | 340.43 |
| 26 | 2450449 | 1996-12-31 | 340.64 |
| 27 | 2450784 | 1997-12-01 | 341.79 |
| 28 | 2451127 | 1998-11-09 | 342.93 |
| 29 | 2451465 | 1999-10-13 | 342.71 |
| 30 | 2451807 | 2000-09-19 | 343.85 |
| 31 | 2452157 | 2001-09-04 | 345.85 |
| 32 | 2452504 | 2002-08-17 | 346.79 |
| 33 | 2452846 | 2003-07-25 | 347.93 |
| 34 | 2453201 | 2004-07-14 | 348.64 |
| 35 | 2453552 | 2005-06-30 | 348.21 |
| 36 | 2453895 | 2006-06-08 | 348 |
| 37 | 2454248 | 2007-05-27 | 348 |
| 38 | 2454597 | 2008-05-10 | 347.72 |
| 39 | 2454939 | 2009-04-17 | 348 |
| 40 | 2455283 | 2010-03-27 | 348 |
| 41 | 2455636 | 2011-03-15 | 347.64 |
| 42 | 2455985 | 2012-02-27 | 347.22 |
| 43 | 2456334 | 2013-02-10 | 347 |
| 44 | 2456681 | 2014-01-23 | 347.78 |
| 45 | 2457031 | 2015-01-08 | 348.43 |
| 46 | 2457366 | 2015-12-09 | 347.93 |
| 47 | 2457714 | 2016-11-21 | 347.15 |
| 48 | 2458074 | 2017-11-16 | 347.58 |
| 49 | 2458425 | 2018-11-02 | 349 |
| 50 | 2458765 | 2019-10-08 | 350.27 |
| 51 | 2459110 | 2020-09-17 | 349.31 |
| 52 | 2459468 | 2021-09-10 | 346.67 |
| 53 | 2459815 | 2022-08-23 | 345.82 |
| 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. |