| E | O (JD) | O (dat) | Period |
| -100 | 2414892 | 1899-08-25 | 288.25 |
| -97 | 2415743 | 1901-12-24 | 285.81 |
| -96 | 2416017 | 1902-09-24 | 285.47 |
| -95 | 2416301 | 1903-07-05 | 286.95 |
| -94 | 2416603 | 1904-05-02 | 286.94 |
| -92 | 2417160 | 1905-11-10 | 287.5 |
| -91 | 2417460 | 1906-09-06 | 287.63 |
| -90 | 2417760 | 1907-07-03 | 285.94 |
| -89 | 2418040 | 1908-04-08 | 285.33 |
| -88 | 2418320 | 1909-01-13 | 286 |
| -87 | 2418600 | 1909-10-20 | 286 |
| -86 | 2418879 | 1910-07-26 | 286.19 |
| -82 | 2420020 | 1913-09-09 | 287.14 |
| -81 | 2420320 | 1914-07-06 | 288.05 |
| -80 | 2420620 | 1915-05-02 | 287.87 |
| -78 | 2421190 | 1916-11-22 | 288.62 |
| -77 | 2421487 | 1917-09-15 | 288.67 |
| -76 | 2421770 | 1918-06-25 | 287.29 |
| -74 | 2422330 | 1920-01-06 | 288.13 |
| -73 | 2422630 | 1920-11-01 | 288.32 |
| -72 | 2422906 | 1921-08-04 | 287.7 |
| -68 | 2424067 | 1924-10-08 | 288.74 |
| -67 | 2424370 | 1925-08-07 | 290.23 |
| -66 | 2424650 | 1926-05-14 | 291.41 |
| -64 | 2425224 | 1927-12-09 | 292.42 |
| -63 | 2425517 | 1928-09-27 | 292.06 |
| -62 | 2425828 | 1929-08-04 | 291.81 |
| -61 | 2426119 | 1930-05-22 | 293.87 |
| -60 | 2426410 | 1931-03-09 | 294.64 |
| -59 | 2426700 | 1931-12-24 | 293.79 |
| -58 | 2426989 | 1932-10-08 | 292.57 |
| -57 | 2427293 | 1933-08-08 | 291.29 |
| -56 | 2427573 | 1934-05-15 | 291.5 |
| -55 | 2427885 | 1935-03-23 | 292.21 |
| -54 | 2428158 | 1935-12-21 | 290.71 |
| -53 | 2428449 | 1936-10-07 | 289.86 |
| -52 | 2428742 | 1937-07-27 | 290.86 |
| -51 | 2429038 | 1938-05-19 | 294.21 |
| -50 | 2429314 | 1939-02-19 | 298.21 |
| -49 | 2429610 | 1939-12-12 | 298.5 |
| -48 | 2429920 | 1940-10-17 | 297.5 |
| -47 | 2430242 | 1941-09-04 | 297.36 |
| -46 | 2430540 | 1942-06-29 | 299.43 |
| -45 | 2430830 | 1943-04-15 | 299.36 |
| -44 | 2431115 | 1944-01-25 | 295.21 |
| -43 | 2431400 | 1944-11-05 | 292 |
| -42 | 2431716 | 1945-09-17 | 291.64 |
| -41 | 2432005 | 1946-07-03 | 292.29 |
| -40 | 2432290 | 1947-04-14 | 292.36 |
| -39 | 2432580 | 1948-01-29 | 290.43 |
| -38 | 2432873 | 1948-11-17 | 289.07 |
| -37 | 2433164 | 1949-09-04 | 290 |
| -36 | 2433444 | 1950-06-11 | 289.79 |
| -35 | 2433738 | 1951-04-01 | 288.5 |
| -34 | 2434030 | 1952-01-18 | 287.71 |
| -33 | 2434325 | 1952-11-08 | 287.64 |
| -32 | 2434602 | 1953-08-12 | 287.5 |
| -31 | 2434890 | 1954-05-27 | 286.36 |
| -30 | 2435175 | 1955-03-08 | 285.71 |
| -29 | 2435460 | 1955-12-18 | 286.29 |
| -28 | 2435747 | 1956-09-30 | 287 |
| -27 | 2436030 | 1957-07-10 | 286.21 |
| -26 | 2436325 | 1958-05-01 | 284.79 |
| -25 | 2436610 | 1959-02-10 | 285.21 |
| -24 | 2436900 | 1959-11-27 | 285.36 |
| -23 | 2437172 | 1960-08-25 | 285.36 |
| -22 | 2437450 | 1961-05-30 | 286.21 |
| -21 | 2437750 | 1962-03-26 | 285.29 |
| -20 | 2438022 | 1962-12-23 | 285.21 |
| -19 | 2438328 | 1963-10-25 | 286.14 |
| -18 | 2438614 | 1964-08-06 | 285.86 |
| -17 | 2438890 | 1965-05-09 | 285.14 |
| -16 | 2439175 | 1966-02-18 | 284.5 |
| -15 | 2439453 | 1966-11-23 | 283.07 |
| -14 | 2439749 | 1967-09-15 | 283.64 |
| -13 | 2440015 | 1968-06-07 | 285.43 |
| -12 | 2440318 | 1969-04-06 | 286.07 |
| -11 | 2440587 | 1969-12-31 | 287.36 |
| -10 | 2440888 | 1970-10-28 | 287.21 |
| -9 | 2441173 | 1971-08-09 | 285.71 |
| -8 | 2441460 | 1972-05-22 | 286.07 |
| -7 | 2441765 | 1973-03-23 | 287.29 |
| -6 | 2442020 | 1973-12-03 | 287.5 |
| -5 | 2442313 | 1974-09-22 | 286.71 |
| -4 | 2442597 | 1975-07-03 | 285.64 |
| -3 | 2442900 | 1976-05-01 | 288.71 |
| -2 | 2443186 | 1977-02-11 | 292.29 |
| -1 | 2443461 | 1977-11-13 | 293.21 |
| 0 | 2443763 | 1978-09-11 | 293.5 |
| 1 | 2444064 | 1979-07-09 | 293.29 |
| 2 | 2444361 | 1980-05-01 | 293.5 |
| 3 | 2444654 | 1981-02-18 | 292.43 |
| 4 | 2444952 | 1981-12-13 | 289.29 |
| 5 | 2445240 | 1982-09-27 | 287 |
| 6 | 2445516 | 1983-06-30 | 286.07 |
| 7 | 2445802 | 1984-04-11 | 286 |
| 8 | 2446075 | 1985-01-09 | 285.21 |
| 9 | 2446368 | 1985-10-29 | 284.14 |
| 10 | 2446652 | 1986-08-09 | 285.29 |
| 11 | 2446958 | 1987-06-11 | 287.43 |
| 12 | 2447227 | 1988-03-06 | 289 |
| 13 | 2447507 | 1988-12-11 | 289.36 |
| 14 | 2447805 | 1989-10-05 | 287.29 |
| 15 | 2448096 | 1990-07-23 | 286.5 |
| 16 | 2448393 | 1991-05-16 | 288.07 |
| 17 | 2448678 | 1992-02-25 | 287.93 |
| 18 | 2448954 | 1992-11-27 | 286.79 |
| 19 | 2449242 | 1993-09-11 | 285.21 |
| 20 | 2449525 | 1994-06-21 | 284.36 |
| 21 | 2449818 | 1995-04-10 | 284.71 |
| 22 | 2450098 | 1996-01-15 | 285.36 |
| 23 | 2450384 | 1996-10-27 | 284.93 |
| 24 | 2450668 | 1997-08-07 | 283.21 |
| 25 | 2450950 | 1998-05-16 | 283.71 |
| 26 | 2451241 | 1999-03-03 | 286.07 |
| 27 | 2451515 | 1999-12-02 | 286.79 |
| 28 | 2451793 | 2000-09-05 | 285.57 |
| 29 | 2452095 | 2001-07-04 | 283.93 |
| 30 | 2452392 | 2002-04-27 | 284.57 |
| 31 | 2452675 | 2003-02-04 | 286.93 |
| 32 | 2452941 | 2003-10-28 | 285.14 |
| 33 | 2453225 | 2004-08-07 | 283.07 |
| 34 | 2453515 | 2005-05-24 | 284 |
| 35 | 2453810 | 2006-03-15 | 286.21 |
| 36 | 2454070 | 2006-11-30 | 288.71 |
| 37 | 2454380 | 2007-10-06 | 289.07 |
| 38 | 2454663 | 2008-07-15 | 288.79 |
| 39 | 2454960 | 2009-05-08 | 289.93 |
| 40 | 2455248 | 2010-02-20 | 290.79 |
| 41 | 2455539 | 2010-12-08 | 291.79 |
| 42 | 2455829 | 2011-09-24 | 293.36 |
| 43 | 2456110 | 2012-07-01 | 293.36 |
| 44 | 2456411 | 2013-04-28 | 294.14 |
| 45 | 2456717 | 2014-02-28 | 295.36 |
| 46 | 2457013 | 2014-12-21 | 296.93 |
| 47 | 2457302 | 2015-10-06 | 297.5 |
| 48 | 2457603 | 2016-08-02 | 297.93 |
| 49 | 2457900 | 2017-05-26 | 297.79 |
| 50 | 2458196 | 2018-03-18 | 296.71 |
| 51 | 2458490 | 2019-01-06 | 297.29 |
| 52 | 2458809 | 2019-11-21 | 297.81 |
| 53 | 2459090 | 2020-08-28 | 298.06 |
| 54 | 2459379 | 2021-06-13 | 299.5 |
| 55 | 2459688 | 2022-04-18 | 300.6 |
| 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. |