| E | O (JD) | O (dat) | Period |
| -73 | 2413141 | 1894-11-08 | 435.11 |
| -72 | 2413598 | 1896-02-08 | 436.93 |
| -71 | 2414014 | 1897-03-30 | 434.91 |
| -70 | 2414460 | 1898-06-19 | 431.59 |
| -69 | 2414891 | 1899-08-24 | 429.93 |
| -68 | 2415337 | 1900-11-13 | 427.93 |
| -67 | 2415749 | 1901-12-30 | 423.65 |
| -66 | 2416164 | 1903-02-18 | 418.36 |
| -65 | 2416594 | 1904-04-23 | 415.71 |
| -64 | 2417009 | 1905-06-12 | 415.07 |
| -63 | 2417396 | 1906-07-04 | 418.61 |
| -62 | 2417812 | 1907-08-24 | 419.88 |
| -61 | 2418236 | 1908-10-21 | 417.74 |
| -60 | 2418661 | 1909-12-20 | 418.99 |
| -58 | 2419531 | 1912-05-08 | 420.56 |
| -57 | 2419945 | 1913-06-26 | 418.38 |
| -56 | 2420342 | 1914-07-28 | 416.56 |
| -55 | 2420767 | 1915-09-26 | 416.73 |
| -54 | 2421170 | 1916-11-02 | 416 |
| -53 | 2421572 | 1917-12-09 | 415.79 |
| -52 | 2421990 | 1919-01-31 | 419.58 |
| -51 | 2422453 | 1920-05-08 | 421.21 |
| -50 | 2422847 | 1921-06-06 | 422.71 |
| -49 | 2423261 | 1922-07-25 | 425 |
| -48 | 2423722 | 1923-10-29 | 422.65 |
| -47 | 2424112 | 1924-11-22 | 422.51 |
| -46 | 2424548 | 1926-02-01 | 425.86 |
| -45 | 2424964 | 1927-03-24 | 425.35 |
| -44 | 2425396 | 1928-05-29 | 424.93 |
| -43 | 2425819 | 1929-07-26 | 425.93 |
| -42 | 2426251 | 1930-10-01 | 426.86 |
| -41 | 2426687 | 1931-12-11 | 426.64 |
| -40 | 2427096 | 1933-01-23 | 425.06 |
| -39 | 2427527 | 1934-03-30 | 424.86 |
| -38 | 2427961 | 1935-06-07 | 423.79 |
| -37 | 2428372 | 1936-07-22 | 424.29 |
| -36 | 2428794 | 1937-09-17 | 423.86 |
| -35 | 2429224 | 1938-11-21 | 421.71 |
| -34 | 2429647 | 1940-01-18 | 421.5 |
| -33 | 2430076 | 1941-03-22 | 421.43 |
| -32 | 2430481 | 1942-05-01 | 422.65 |
| -31 | 2430911 | 1943-07-05 | 421.43 |
| -30 | 2431323 | 1944-08-20 | 419.13 |
| -29 | 2431743 | 1945-10-14 | 419.78 |
| -28 | 2432192 | 1947-01-06 | 420.01 |
| -27 | 2432579 | 1948-01-28 | 418.86 |
| -26 | 2433012 | 1949-04-05 | 416.14 |
| -25 | 2433422 | 1950-05-20 | 416.06 |
| -24 | 2433850 | 1951-07-22 | 415.14 |
| -23 | 2434248 | 1952-08-23 | 415.08 |
| -22 | 2434644 | 1953-09-23 | 417.86 |
| -21 | 2435116 | 1955-01-08 | 416.07 |
| -20 | 2435467 | 1955-12-25 | 416.06 |
| -19 | 2435935 | 1957-04-06 | 420.36 |
| -18 | 2436349 | 1958-05-25 | 419.15 |
| -17 | 2436748 | 1959-06-28 | 420.58 |
| -16 | 2437175 | 1960-08-28 | 422.43 |
| -15 | 2437602 | 1961-10-29 | 418.78 |
| -14 | 2438026 | 1962-12-27 | 419.57 |
| -13 | 2438445 | 1964-02-19 | 420.01 |
| -12 | 2438871 | 1965-04-20 | 420.36 |
| -11 | 2439276 | 1966-05-30 | 422 |
| -10 | 2439695 | 1967-07-23 | 422.85 |
| -9 | 2440108 | 1968-09-08 | 421.36 |
| -8 | 2440554 | 1969-11-28 | 419.79 |
| -7 | 2440982 | 1971-01-30 | 421.51 |
| -6 | 2441409 | 1972-04-01 | 423 |
| -5 | 2441806 | 1973-05-03 | 422.28 |
| -4 | 2442218 | 1974-06-19 | 420.78 |
| -3 | 2442654 | 1975-08-29 | 421.29 |
| -2 | 2443071 | 1976-10-19 | 423.86 |
| -1 | 2443503 | 1977-12-25 | 427 |
| 0 | 2443924 | 1979-02-19 | 427.35 |
| 1 | 2444365 | 1980-05-05 | 427.21 |
| 2 | 2444784 | 1981-06-28 | 427.79 |
| 3 | 2445218 | 1982-09-05 | 427.22 |
| 4 | 2445637 | 1983-10-29 | 427 |
| 5 | 2446069 | 1985-01-03 | 427.06 |
| 6 | 2446494 | 1986-03-04 | 425.28 |
| 7 | 2446914 | 1987-04-28 | 423.93 |
| 8 | 2447353 | 1988-07-10 | 424.43 |
| 9 | 2447775 | 1989-09-05 | 423.36 |
| 10 | 2448181 | 1990-10-16 | 422.99 |
| 11 | 2448609 | 1991-12-18 | 423.07 |
| 12 | 2449039 | 1993-02-20 | 423.58 |
| 13 | 2449451 | 1994-04-08 | 425.58 |
| 14 | 2449879 | 1995-06-10 | 426 |
| 15 | 2450311 | 1996-08-15 | 425.21 |
| 16 | 2450747 | 1997-10-25 | 425.28 |
| 17 | 2451167 | 1998-12-19 | 425.22 |
| 18 | 2451587 | 2000-02-12 | 424.22 |
| 19 | 2452014 | 2001-04-14 | 421.93 |
| 20 | 2452430 | 2002-06-04 | 422.06 |
| 21 | 2452853 | 2003-08-01 | 424.36 |
| 22 | 2453276 | 2004-09-27 | 423.22 |
| 23 | 2453689 | 2005-11-14 | 421.86 |
| 24 | 2454134 | 2007-02-02 | 422.64 |
| 25 | 2454561 | 2008-04-04 | 421.56 |
| 26 | 2454965 | 2009-05-13 | 422.07 |
| 27 | 2455385 | 2010-07-07 | 422.22 |
| 28 | 2455815 | 2011-09-10 | 418.43 |
| 29 | 2456216 | 2012-10-15 | 418.5 |
| 30 | 2456658 | 2013-12-31 | 419.99 |
| 31 | 2457076 | 2015-02-22 | 420.21 |
| 32 | 2457477 | 2016-03-29 | 421.79 |
| 33 | 2457908 | 2017-06-03 | 421.79 |
| 34 | 2458322 | 2018-07-22 | 420.11 |
| 35 | 2458761 | 2019-10-04 | 422.13 |
| 36 | 2459175 | 2020-11-21 | 424.34 |
| 37 | 2459604 | 2022-01-24 | 423.02 |
| 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. |