| E | O (JD) | O (dat) | Period |
| -141 | 2399246 | 1856-10-23 | 300.45 |
| -109 | 2408854 | 1883-02-12 | 300.12 |
| -108 | 2409161 | 1883-12-16 | 299.32 |
| -107 | 2409457 | 1884-10-07 | 299.74 |
| -102 | 2410961 | 1888-11-19 | 299.98 |
| -98 | 2412152 | 1892-02-23 | 299.52 |
| -97 | 2412438 | 1892-12-05 | 299.49 |
| -96 | 2412748 | 1893-10-11 | 299.52 |
| -95 | 2413051 | 1894-08-10 | 299.96 |
| -93 | 2413650 | 1896-03-31 | 301.25 |
| -91 | 2414252 | 1897-11-23 | 301 |
| -89 | 2414852 | 1899-07-16 | 299.75 |
| -86 | 2415760 | 1902-01-10 | 299.26 |
| -85 | 2416060 | 1902-11-06 | 299.81 |
| -84 | 2416350 | 1903-08-23 | 300.48 |
| -83 | 2416643 | 1904-06-11 | 299.37 |
| -82 | 2416941 | 1905-04-05 | 298.21 |
| -81 | 2417257 | 1906-02-15 | 298.43 |
| -80 | 2417556 | 1906-12-11 | 298.22 |
| -79 | 2417846 | 1907-09-27 | 298 |
| -78 | 2418149 | 1908-07-26 | 296.85 |
| -77 | 2418439 | 1909-05-12 | 296.07 |
| -76 | 2418729 | 1910-02-26 | 297 |
| -75 | 2419027 | 1910-12-21 | 298.07 |
| -74 | 2419327 | 1911-10-17 | 299.15 |
| -73 | 2419631 | 1912-08-16 | 299.71 |
| -72 | 2419929 | 1913-06-10 | 300.71 |
| -71 | 2420239 | 1914-04-16 | 301.29 |
| -70 | 2420537 | 1915-02-08 | 300.79 |
| -69 | 2420827 | 1915-11-25 | 300.22 |
| -68 | 2421139 | 1916-10-02 | 298.71 |
| -67 | 2421433 | 1917-07-23 | 298.35 |
| -66 | 2421736 | 1918-05-22 | 299.43 |
| -65 | 2422027 | 1919-03-09 | 298.5 |
| -64 | 2422323 | 1919-12-30 | 298.29 |
| -63 | 2422630 | 1920-11-01 | 298.42 |
| -62 | 2422926 | 1921-08-24 | 297.64 |
| -61 | 2423219 | 1922-06-13 | 298.93 |
| -60 | 2423529 | 1923-04-19 | 299.36 |
| -59 | 2423818 | 1924-02-02 | 299.36 |
| -58 | 2424112 | 1924-11-22 | 300.85 |
| -57 | 2424423 | 1925-09-29 | 299.64 |
| -56 | 2424721 | 1926-07-24 | 299.07 |
| -55 | 2425026 | 1927-05-25 | 301.29 |
| -54 | 2425331 | 1928-03-25 | 301.15 |
| -53 | 2425612 | 1928-12-31 | 300 |
| -52 | 2425922 | 1929-11-06 | 298.92 |
| -51 | 2426226 | 1930-09-06 | 298.15 |
| -50 | 2426525 | 1931-07-02 | 299.36 |
| -49 | 2426819 | 1932-04-21 | 300.29 |
| -48 | 2427113 | 1933-02-09 | 299.21 |
| -47 | 2427418 | 1933-12-11 | 298.57 |
| -46 | 2427716 | 1934-10-05 | 299.57 |
| -45 | 2428022 | 1935-08-07 | 300.86 |
| -44 | 2428315 | 1936-05-26 | 300.43 |
| -43 | 2428616 | 1937-03-23 | 299.92 |
| -42 | 2428922 | 1938-01-23 | 300.28 |
| -41 | 2429222 | 1938-11-19 | 300.29 |
| -40 | 2429515 | 1939-09-08 | 301.43 |
| -39 | 2429818 | 1940-07-07 | 301.22 |
| -38 | 2430124 | 1941-05-09 | 299.42 |
| -37 | 2430417 | 1942-02-26 | 300.14 |
| -36 | 2430734 | 1943-01-09 | 300.72 |
| -35 | 2431021 | 1943-10-23 | 300.65 |
| -34 | 2431315 | 1944-08-12 | 301 |
| -33 | 2431624 | 1945-06-17 | 299.35 |
| -32 | 2431919 | 1946-04-08 | 298.85 |
| -31 | 2432232 | 1947-02-15 | 300.72 |
| -30 | 2432523 | 1947-12-03 | 301 |
| -29 | 2432819 | 1948-09-24 | 299.79 |
| -28 | 2433120 | 1949-07-22 | 298.35 |
| -27 | 2433426 | 1950-05-24 | 298.64 |
| -26 | 2433727 | 1951-03-21 | 300.29 |
| -25 | 2434013 | 1952-01-01 | 300.43 |
| -24 | 2434315 | 1952-10-29 | 300.29 |
| -23 | 2434621 | 1953-08-31 | 300.35 |
| -22 | 2434925 | 1954-07-01 | 301.5 |
| -21 | 2435220 | 1955-04-22 | 302.93 |
| -20 | 2435530 | 1956-02-26 | 303.22 |
| -19 | 2435828 | 1956-12-20 | 302.79 |
| -18 | 2436133 | 1957-10-21 | 302.78 |
| -17 | 2436436 | 1958-08-20 | 302.57 |
| -16 | 2436745 | 1959-06-25 | 301.57 |
| -15 | 2437040 | 1960-04-15 | 301.79 |
| -14 | 2437344 | 1961-02-13 | 301.65 |
| -13 | 2437642 | 1961-12-08 | 300.78 |
| -12 | 2437938 | 1962-09-30 | 300.78 |
| -11 | 2438248 | 1963-08-06 | 300.57 |
| -10 | 2438544 | 1964-05-28 | 299.57 |
| -9 | 2438848 | 1965-03-28 | 299.65 |
| -8 | 2439148 | 1966-01-22 | 299.35 |
| -7 | 2439444 | 1966-11-14 | 297.35 |
| -6 | 2439736 | 1967-09-02 | 296.79 |
| -5 | 2440039 | 1968-07-01 | 296.79 |
| -4 | 2440338 | 1969-04-26 | 296.86 |
| -3 | 2440617 | 1970-01-30 | 297.57 |
| -2 | 2440930 | 1970-12-09 | 297.42 |
| -1 | 2441221 | 1971-09-26 | 296.93 |
| 0 | 2441527 | 1972-07-28 | 298.36 |
| 1 | 2441819 | 1973-05-16 | 298.72 |
| 2 | 2442120 | 1974-03-13 | 298.71 |
| 3 | 2442414 | 1975-01-01 | 299.5 |
| 4 | 2442718 | 1975-11-01 | 299.22 |
| 5 | 2443011 | 1976-08-20 | 300.15 |
| 6 | 2443322 | 1977-06-27 | 301.22 |
| 7 | 2443619 | 1978-04-20 | 302 |
| 8 | 2443916 | 1979-02-11 | 302.57 |
| 9 | 2444225 | 1979-12-17 | 302.72 |
| 10 | 2444526 | 1980-10-13 | 303.65 |
| 11 | 2444834 | 1981-08-17 | 305.65 |
| 12 | 2445131 | 1982-06-10 | 306.85 |
| 13 | 2445440 | 1983-04-15 | 306.71 |
| 14 | 2445752 | 1984-02-21 | 306.07 |
| 15 | 2446062 | 1984-12-27 | 306.22 |
| 16 | 2446375 | 1985-11-05 | 306.29 |
| 17 | 2446670 | 1986-08-27 | 305.64 |
| 18 | 2446975 | 1987-06-28 | 304.78 |
| 19 | 2447277 | 1988-04-25 | 303.29 |
| 20 | 2447582 | 1989-02-24 | 302.72 |
| 21 | 2447889 | 1989-12-28 | 302.29 |
| 22 | 2448192 | 1990-10-27 | 300.92 |
| 23 | 2448491 | 1991-08-22 | 301.42 |
| 24 | 2448792 | 1992-06-18 | 302.07 |
| 25 | 2449085 | 1993-04-07 | 300.93 |
| 26 | 2449380 | 1994-01-27 | 300.29 |
| 27 | 2449699 | 1994-12-12 | 300.14 |
| 28 | 2450001 | 1995-10-10 | 300.35 |
| 29 | 2450293 | 1996-07-28 | 301.07 |
| 30 | 2450594 | 1997-05-25 | 300.15 |
| 31 | 2450891 | 1998-03-18 | 299 |
| 32 | 2451191 | 1999-01-12 | 299.71 |
| 33 | 2451489 | 1999-11-06 | 299.57 |
| 34 | 2451792 | 2000-09-04 | 298.93 |
| 35 | 2452094 | 2001-07-03 | 299 |
| 36 | 2452396 | 2002-05-01 | 298.65 |
| 37 | 2452685 | 2003-02-14 | 298.57 |
| 38 | 2452985 | 2003-12-11 | 298.92 |
| 39 | 2453283 | 2004-10-04 | 299.15 |
| 40 | 2453578 | 2005-07-26 | 300.07 |
| 41 | 2453883 | 2006-05-27 | 300.93 |
| 42 | 2454188 | 2007-03-28 | 300.92 |
| 43 | 2454490 | 2008-01-24 | 301 |
| 44 | 2454792 | 2008-11-21 | 301.22 |
| 45 | 2455091 | 2009-09-16 | 300.86 |
| 46 | 2455390 | 2010-07-12 | 300.15 |
| 47 | 2455685 | 2011-05-03 | 300.07 |
| 48 | 2455993 | 2012-03-06 | 300.21 |
| 49 | 2456290 | 2012-12-28 | 300.43 |
| 50 | 2456590 | 2013-10-24 | 300.5 |
| 51 | 2456893 | 2014-08-23 | 299.43 |
| 52 | 2457193 | 2015-06-19 | 299.64 |
| 53 | 2457494 | 2016-04-15 | 300.64 |
| 54 | 2457788 | 2017-02-03 | 300 |
| 55 | 2458082 | 2017-11-24 | 299.57 |
| 56 | 2458396 | 2018-10-04 | 299.07 |
| 57 | 2458693 | 2019-07-28 | 299.28 |
| 58 | 2458990 | 2020-05-20 | 300.77 |
| 59 | 2459290 | 2021-03-16 | 300.01 |
| 60 | 2459584 | 2022-01-04 | 297.83 |
| 61 | 2459888 | 2022-11-04 | 297.99 |
| 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. |