| E | O (JD) | O (dat) | Period |
| -132 | 2405652 | 1874-05-08 | 304.26 |
| -126 | 2407465 | 1879-04-25 | 303.71 |
| -120 | 2409332 | 1884-06-04 | 302.88 |
| -119 | 2409626 | 1885-03-25 | 302.59 |
| -114 | 2411155 | 1889-06-01 | 301.67 |
| -109 | 2412627 | 1893-06-12 | 300.99 |
| -108 | 2412936 | 1894-04-17 | 299.36 |
| -104 | 2414124 | 1897-07-18 | 297.45 |
| -103 | 2414434 | 1898-05-24 | 296.95 |
| -99 | 2415592 | 1901-07-26 | 296.02 |
| -98 | 2415880 | 1902-05-10 | 296.13 |
| -95 | 2416774 | 1904-10-20 | 295.63 |
| -94 | 2417071 | 1905-08-13 | 295.23 |
| -93 | 2417375 | 1906-06-13 | 295.49 |
| -92 | 2417681 | 1907-04-15 | 297.03 |
| -91 | 2417975 | 1908-02-03 | 298.59 |
| -90 | 2418255 | 1908-11-09 | 300.3 |
| -89 | 2418545 | 1909-08-26 | 300.28 |
| -88 | 2418857 | 1910-07-04 | 299.27 |
| -87 | 2419157 | 1911-04-30 | 298.54 |
| -86 | 2419486 | 1912-03-24 | 298.75 |
| -85 | 2419795 | 1913-01-27 | 297.45 |
| -84 | 2420065 | 1913-10-24 | 294.68 |
| -83 | 2420345 | 1914-07-31 | 292.6 |
| -82 | 2420641 | 1915-05-23 | 292.17 |
| -81 | 2420948 | 1916-03-25 | 291.95 |
| -80 | 2421215 | 1916-12-17 | 294.15 |
| -79 | 2421495 | 1917-09-23 | 297 |
| -78 | 2421810 | 1918-08-04 | 298.09 |
| -77 | 2422125 | 1919-06-15 | 298.71 |
| -76 | 2422423 | 1920-04-08 | 299.06 |
| -75 | 2422735 | 1921-02-14 | 299.69 |
| -74 | 2423028 | 1921-12-04 | 299.15 |
| -73 | 2423312 | 1922-09-14 | 297.8 |
| -72 | 2423615 | 1923-07-14 | 297.35 |
| -71 | 2423908 | 1924-05-02 | 297.38 |
| -70 | 2424199 | 1925-02-17 | 297.36 |
| -69 | 2424503 | 1925-12-18 | 298.11 |
| -68 | 2424807 | 1926-10-18 | 299.16 |
| -67 | 2425111 | 1927-08-18 | 299.58 |
| -66 | 2425404 | 1928-06-06 | 299.93 |
| -65 | 2425701 | 1929-03-30 | 300.05 |
| -64 | 2425999 | 1930-01-22 | 300.19 |
| -63 | 2426307 | 1930-11-26 | 300.92 |
| -62 | 2426608 | 1931-09-23 | 301.72 |
| -61 | 2426902 | 1932-07-13 | 302.39 |
| -60 | 2427203 | 1933-05-10 | 302 |
| -59 | 2427513 | 1934-03-16 | 301.64 |
| -58 | 2427824 | 1935-01-21 | 301.24 |
| -57 | 2428125 | 1935-11-18 | 300.79 |
| -56 | 2428421 | 1936-09-09 | 300.1 |
| -55 | 2428708 | 1937-06-23 | 299.53 |
| -54 | 2429013 | 1938-04-24 | 298 |
| -53 | 2429317 | 1939-02-22 | 297.29 |
| -52 | 2429610 | 1939-12-12 | 296.78 |
| -51 | 2429904 | 1940-10-01 | 297.05 |
| -50 | 2430213 | 1941-08-06 | 297.02 |
| -49 | 2430493 | 1942-05-13 | 296.38 |
| -48 | 2430797 | 1943-03-13 | 296.68 |
| -47 | 2431085 | 1943-12-26 | 297.1 |
| -46 | 2431393 | 1944-10-29 | 297 |
| -45 | 2431685 | 1945-08-17 | 296.46 |
| -44 | 2431980 | 1946-06-08 | 297.12 |
| -43 | 2432289 | 1947-04-13 | 297.13 |
| -42 | 2432582 | 1948-01-31 | 297.29 |
| -41 | 2432872 | 1948-11-16 | 296.65 |
| -40 | 2433162 | 1949-09-02 | 296.81 |
| -39 | 2433469 | 1950-07-06 | 297.01 |
| -38 | 2433770 | 1951-05-03 | 297.49 |
| -37 | 2434064 | 1952-02-21 | 298.36 |
| -36 | 2434354 | 1952-12-07 | 299.06 |
| -35 | 2434656 | 1953-10-05 | 299.1 |
| -34 | 2434959 | 1954-08-04 | 298.67 |
| -33 | 2435266 | 1955-06-07 | 298.45 |
| -32 | 2435561 | 1956-03-28 | 298.51 |
| -31 | 2435860 | 1957-01-21 | 298.6 |
| -30 | 2436153 | 1957-11-10 | 298.11 |
| -29 | 2436451 | 1958-09-04 | 297.36 |
| -28 | 2436745 | 1959-06-25 | 296.57 |
| -27 | 2437045 | 1960-04-20 | 296.02 |
| -26 | 2437348 | 1961-02-17 | 295.97 |
| -25 | 2437644 | 1961-12-10 | 296.59 |
| -24 | 2437934 | 1962-09-26 | 296.87 |
| -23 | 2438225 | 1963-07-14 | 297.3 |
| -22 | 2438515 | 1964-04-29 | 296.64 |
| -21 | 2438822 | 1965-03-02 | 296.54 |
| -20 | 2439130 | 1966-01-04 | 296.95 |
| -19 | 2439425 | 1966-10-26 | 297.6 |
| -18 | 2439725 | 1967-08-22 | 297.62 |
| -17 | 2440003 | 1968-05-26 | 296.95 |
| -16 | 2440307 | 1969-03-26 | 296.89 |
| -15 | 2440607 | 1970-01-20 | 296.33 |
| -14 | 2440909 | 1970-11-18 | 296.75 |
| -13 | 2441200 | 1971-09-05 | 297.49 |
| -12 | 2441489 | 1972-06-20 | 298.13 |
| -11 | 2441807 | 1973-05-04 | 297.67 |
| -10 | 2442086 | 1974-02-07 | 297.62 |
| -9 | 2442391 | 1974-12-09 | 298.33 |
| -8 | 2442696 | 1975-10-10 | 298.98 |
| -7 | 2442988 | 1976-07-28 | 298.65 |
| -6 | 2443283 | 1977-05-19 | 298.17 |
| -5 | 2443583 | 1978-03-15 | 298.5 |
| -4 | 2443895 | 1979-01-21 | 298.22 |
| -3 | 2444189 | 1979-11-11 | 298.15 |
| -2 | 2444474 | 1980-08-22 | 298.67 |
| -1 | 2444779 | 1981-06-23 | 298.92 |
| 0 | 2445073 | 1982-04-13 | 299.15 |
| 1 | 2445378 | 1983-02-12 | 299.48 |
| 2 | 2445675 | 1983-12-06 | 299.85 |
| 3 | 2445979 | 1984-10-05 | 298.88 |
| 4 | 2446279 | 1985-08-01 | 297.72 |
| 5 | 2446583 | 1986-06-01 | 297.36 |
| 6 | 2446885 | 1987-03-30 | 296.88 |
| 7 | 2447172 | 1988-01-11 | 296.5 |
| 8 | 2447445 | 1988-10-10 | 295.71 |
| 9 | 2447750 | 1989-08-11 | 294.87 |
| 10 | 2448057 | 1990-06-14 | 295.11 |
| 11 | 2448357 | 1991-04-10 | 295.2 |
| 12 | 2448650 | 1992-01-28 | 295.9 |
| 13 | 2448939 | 1992-11-12 | 296.42 |
| 14 | 2449226 | 1993-08-26 | 295.88 |
| 15 | 2449539 | 1994-07-05 | 296.3 |
| 16 | 2449823 | 1995-04-15 | 297.19 |
| 17 | 2450122 | 1996-02-08 | 298.94 |
| 18 | 2450421 | 1996-12-03 | 299.81 |
| 19 | 2450720 | 1997-09-28 | 299.97 |
| 20 | 2451030 | 1998-08-04 | 299.69 |
| 21 | 2451328 | 1999-05-29 | 299.97 |
| 22 | 2451641 | 2000-04-06 | 300.25 |
| 23 | 2451927 | 2001-01-17 | 300.16 |
| 24 | 2452220 | 2001-11-06 | 299.33 |
| 25 | 2452522 | 2002-09-04 | 298 |
| 26 | 2452818 | 2003-06-27 | 297.42 |
| 27 | 2453133 | 2004-05-07 | 297.37 |
| 28 | 2453428 | 2005-02-26 | 297.49 |
| 29 | 2453714 | 2005-12-09 | 296.33 |
| 30 | 2454003 | 2006-09-24 | 295.77 |
| 31 | 2454304 | 2007-07-22 | 294.33 |
| 32 | 2454613 | 2008-05-26 | 293.8 |
| 33 | 2454898 | 2009-03-07 | 295.21 |
| 34 | 2455178 | 2009-12-12 | 295.68 |
| 35 | 2455490 | 2010-10-20 | 296.48 |
| 36 | 2455762 | 2011-07-19 | 297.04 |
| 37 | 2456075 | 2012-05-27 | 297.48 |
| 38 | 2456391 | 2013-04-08 | 298.38 |
| 39 | 2456668 | 2014-01-10 | 298.48 |
| 40 | 2456980 | 2014-11-18 | 297.55 |
| 41 | 2457281 | 2015-09-15 | 297.25 |
| 42 | 2457573 | 2016-07-03 | 296.7 |
| 43 | 2457866 | 2017-04-22 | 296.45 |
| 44 | 2458157 | 2018-02-07 | 297.07 |
| 45 | 2458450 | 2018-11-27 | 296.47 |
| 46 | 2458744 | 2019-09-17 | 296.67 |
| 47 | 2459063 | 2020-08-01 | 297.51 |
| 48 | 2459354 | 2021-05-19 | 298.54 |
| 49 | 2459650 | 2022-03-11 | 299.89 |
| 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. |