| E | O (JD) | O (dat) | Period |
| -123 | 2405324 | 1873-06-14 | 320.33 |
| -117 | 2407260 | 1878-10-02 | 320.14 |
| -115 | 2407900 | 1880-07-03 | 320.19 |
| -105 | 2411100 | 1889-04-07 | 320.23 |
| -104 | 2411439 | 1890-03-12 | 320.28 |
| -103 | 2411714 | 1890-12-12 | 320.47 |
| -102 | 2412049 | 1891-11-12 | 320.31 |
| -101 | 2412380 | 1892-10-08 | 320.68 |
| -100 | 2412700 | 1893-08-24 | 322.39 |
| -99 | 2413022 | 1894-07-12 | 323.05 |
| -98 | 2413356 | 1895-06-11 | 323.65 |
| -97 | 2413671 | 1896-04-21 | 322.16 |
| -96 | 2413993 | 1897-03-09 | 322.44 |
| -95 | 2414324 | 1898-02-03 | 323 |
| -94 | 2414644 | 1898-12-20 | 323.05 |
| -93 | 2414945 | 1899-10-17 | 322.51 |
| -92 | 2415270 | 1900-09-07 | 322.75 |
| -91 | 2415618 | 1901-08-21 | 322.8 |
| -90 | 2415941 | 1902-07-10 | 322.27 |
| -89 | 2416258 | 1903-05-23 | 322.03 |
| -88 | 2416570 | 1904-03-30 | 321.64 |
| -87 | 2416896 | 1905-02-19 | 319.99 |
| -86 | 2417222 | 1906-01-11 | 318.67 |
| -85 | 2417533 | 1906-11-18 | 318.44 |
| -84 | 2417850 | 1907-10-01 | 318.91 |
| -83 | 2418168 | 1908-08-14 | 318.94 |
| -82 | 2418484 | 1909-06-26 | 318.52 |
| -81 | 2418809 | 1910-05-17 | 319.69 |
| -80 | 2419123 | 1911-03-27 | 320.14 |
| -79 | 2419452 | 1912-02-19 | 320.33 |
| -78 | 2419764 | 1912-12-27 | 320.85 |
| -77 | 2420081 | 1913-11-09 | 320.61 |
| -76 | 2420427 | 1914-10-21 | 319.81 |
| -75 | 2420726 | 1915-08-16 | 320.07 |
| -74 | 2421048 | 1916-07-03 | 319.2 |
| -73 | 2421378 | 1917-05-29 | 319.2 |
| -72 | 2421685 | 1918-04-01 | 318.62 |
| -71 | 2421997 | 1919-02-07 | 317.97 |
| -70 | 2422333 | 1920-01-09 | 318.63 |
| -69 | 2422636 | 1920-11-07 | 318.6 |
| -68 | 2422963 | 1921-09-30 | 318.19 |
| -67 | 2423278 | 1922-08-11 | 318.83 |
| -66 | 2423599 | 1923-06-28 | 319.28 |
| -65 | 2423916 | 1924-05-10 | 319.15 |
| -64 | 2424240 | 1925-03-30 | 319.65 |
| -63 | 2424548 | 1926-02-01 | 319.17 |
| -62 | 2424875 | 1926-12-25 | 319.34 |
| -61 | 2425202 | 1927-11-17 | 319.01 |
| -60 | 2425518 | 1928-09-28 | 319.4 |
| -59 | 2425833 | 1929-08-09 | 319.46 |
| -58 | 2426148 | 1930-06-20 | 319.45 |
| -57 | 2426472 | 1931-05-10 | 319.1 |
| -56 | 2426785 | 1932-03-18 | 318.88 |
| -55 | 2427117 | 1933-02-13 | 318.91 |
| -54 | 2427433 | 1933-12-26 | 318.78 |
| -53 | 2427746 | 1934-11-04 | 318.53 |
| -52 | 2428070 | 1935-09-24 | 318.25 |
| -51 | 2428385 | 1936-08-04 | 317.77 |
| -50 | 2428700 | 1937-06-15 | 316.51 |
| -49 | 2429017 | 1938-04-28 | 316.46 |
| -48 | 2429336 | 1939-03-13 | 316.95 |
| -47 | 2429658 | 1940-01-29 | 316.93 |
| -46 | 2429967 | 1940-12-03 | 317.76 |
| -45 | 2430273 | 1941-10-05 | 318.65 |
| -44 | 2430599 | 1942-08-27 | 319.03 |
| -43 | 2430928 | 1943-07-22 | 319.65 |
| -42 | 2431240 | 1944-05-29 | 320.47 |
| -41 | 2431569 | 1945-04-23 | 321.37 |
| -40 | 2431892 | 1946-03-12 | 321.9 |
| -39 | 2432204 | 1947-01-18 | 321.57 |
| -38 | 2432530 | 1947-12-10 | 321.4 |
| -37 | 2432854 | 1948-10-29 | 321.68 |
| -36 | 2433173 | 1949-09-13 | 321.05 |
| -35 | 2433497 | 1950-08-03 | 321.05 |
| -34 | 2433817 | 1951-06-19 | 320.86 |
| -33 | 2434138 | 1952-05-05 | 320.5 |
| -32 | 2434461 | 1953-03-24 | 320.42 |
| -31 | 2434773 | 1954-01-30 | 320.73 |
| -30 | 2435099 | 1954-12-22 | 321 |
| -29 | 2435413 | 1955-11-01 | 321.56 |
| -28 | 2435739 | 1956-09-22 | 322.15 |
| -27 | 2436061 | 1957-08-10 | 322.85 |
| -26 | 2436387 | 1958-07-02 | 323.94 |
| -25 | 2436710 | 1959-05-21 | 324.18 |
| -24 | 2437035 | 1960-04-10 | 324.53 |
| -23 | 2437359 | 1961-02-28 | 324.12 |
| -22 | 2437685 | 1962-01-20 | 323.48 |
| -21 | 2438015 | 1962-12-16 | 322.58 |
| -20 | 2438333 | 1963-10-30 | 321.54 |
| -19 | 2438656 | 1964-09-17 | 320.28 |
| -18 | 2438974 | 1965-08-01 | 318.77 |
| -17 | 2439290 | 1966-06-13 | 317.82 |
| -16 | 2439608 | 1967-04-27 | 317.01 |
| -15 | 2439923 | 1968-03-07 | 316.48 |
| -14 | 2440238 | 1969-01-16 | 316.21 |
| -13 | 2440548 | 1969-11-22 | 315.94 |
| -12 | 2440874 | 1970-10-14 | 316.01 |
| -11 | 2441189 | 1971-08-25 | 315.56 |
| -10 | 2441500 | 1972-07-01 | 315.58 |
| -9 | 2441821 | 1973-05-18 | 315.77 |
| -8 | 2442131 | 1974-03-24 | 315.82 |
| -7 | 2442452 | 1975-02-08 | 315.64 |
| -6 | 2442757 | 1975-12-10 | 316.12 |
| -5 | 2443079 | 1976-10-27 | 316.63 |
| -4 | 2443399 | 1977-09-12 | 316.33 |
| -3 | 2443713 | 1978-07-23 | 316.68 |
| -2 | 2444031 | 1979-06-06 | 316.97 |
| -1 | 2444351 | 1980-04-21 | 317.33 |
| 0 | 2444669 | 1981-03-05 | 317.75 |
| 1 | 2444974 | 1982-01-04 | 318.07 |
| 2 | 2445298 | 1982-11-24 | 318.48 |
| 3 | 2445620 | 1983-10-12 | 318.99 |
| 4 | 2445934 | 1984-08-21 | 319.76 |
| 5 | 2446266 | 1985-07-19 | 320.34 |
| 6 | 2446579 | 1986-05-28 | 320.33 |
| 7 | 2446897 | 1987-04-11 | 319.94 |
| 8 | 2447222 | 1988-03-01 | 319.96 |
| 9 | 2447548 | 1989-01-21 | 320.11 |
| 10 | 2447863 | 1989-12-02 | 320.17 |
| 11 | 2448171 | 1990-10-06 | 320.48 |
| 12 | 2448497 | 1991-08-28 | 320.3 |
| 13 | 2448822 | 1992-07-18 | 320.41 |
| 14 | 2449143 | 1993-06-04 | 320.41 |
| 15 | 2449469 | 1994-04-26 | 320.73 |
| 16 | 2449783 | 1995-03-06 | 320.91 |
| 17 | 2450100 | 1996-01-17 | 320.33 |
| 18 | 2450429 | 1996-12-11 | 320.74 |
| 19 | 2450743 | 1997-10-21 | 320.8 |
| 20 | 2451063 | 1998-09-06 | 321.34 |
| 21 | 2451385 | 1999-07-25 | 322.39 |
| 22 | 2451703 | 2000-06-07 | 322.88 |
| 23 | 2452040 | 2001-05-10 | 322.65 |
| 24 | 2452351 | 2002-03-17 | 322.45 |
| 25 | 2452682 | 2003-02-11 | 322.03 |
| 26 | 2453010 | 2004-01-05 | 321.18 |
| 27 | 2453329 | 2004-11-19 | 319.8 |
| 28 | 2453642 | 2005-09-28 | 319.02 |
| 29 | 2453956 | 2006-08-08 | 319.63 |
| 30 | 2454280 | 2007-06-28 | 318.29 |
| 31 | 2454594 | 2008-05-07 | 317.79 |
| 32 | 2454902 | 2009-03-11 | 317.4 |
| 33 | 2455237 | 2010-02-09 | 316.98 |
| 34 | 2455570 | 2011-01-08 | 316.58 |
| 35 | 2455860 | 2011-10-25 | 316.24 |
| 36 | 2456183 | 2012-09-12 | 316.47 |
| 37 | 2456492 | 2013-07-18 | 316.49 |
| 38 | 2456805 | 2014-05-27 | 316.17 |
| 39 | 2457125 | 2015-04-12 | 316.28 |
| 40 | 2457446 | 2016-02-27 | 317.32 |
| 41 | 2457768 | 2017-01-14 | 317.14 |
| 42 | 2458084 | 2017-11-26 | 317.38 |
| 43 | 2458405 | 2018-10-13 | 317.32 |
| 44 | 2458713 | 2019-08-17 | 316.85 |
| 45 | 2459029 | 2020-06-28 | 316.26 |
| 46 | 2459346 | 2021-05-11 | 315.68 |
| 47 | 2459665 | 2022-03-26 | 315.54 |
| 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. |