| E | O (JD) | O (dat) | Period |
| -119 | 2415710 | 1901-11-21 | 317.73 |
| -113 | 2417586 | 1907-01-10 | 315.47 |
| -112 | 2417902 | 1907-11-22 | 313.4 |
| -111 | 2418216 | 1908-10-01 | 313.1 |
| -110 | 2418545 | 1909-08-26 | 313.29 |
| -108 | 2419159 | 1911-05-02 | 313.31 |
| -107 | 2419472 | 1912-03-10 | 312.88 |
| -106 | 2419779 | 1913-01-11 | 313.19 |
| -105 | 2420096 | 1913-11-24 | 315.07 |
| -104 | 2420405 | 1914-09-29 | 316.79 |
| -103 | 2420719 | 1915-08-09 | 316.57 |
| -102 | 2421053 | 1916-07-08 | 316.43 |
| -101 | 2421377 | 1917-05-28 | 317.64 |
| -100 | 2421689 | 1918-04-05 | 319.57 |
| -99 | 2421994 | 1919-02-04 | 318.29 |
| -98 | 2422311 | 1919-12-18 | 316.07 |
| -97 | 2422637 | 1920-11-08 | 316.29 |
| -96 | 2422961 | 1921-09-28 | 317.14 |
| -95 | 2423267 | 1922-07-31 | 317.5 |
| -94 | 2423588 | 1923-06-17 | 317.07 |
| -93 | 2423906 | 1924-04-30 | 316.29 |
| -92 | 2424217 | 1925-03-07 | 316.43 |
| -91 | 2424533 | 1926-01-17 | 316.07 |
| -90 | 2424854 | 1926-12-04 | 314.79 |
| -89 | 2425172 | 1927-10-18 | 314.5 |
| -88 | 2425486 | 1928-08-27 | 314.79 |
| -87 | 2425794 | 1929-07-01 | 314.36 |
| -86 | 2426107 | 1930-05-10 | 313.79 |
| -85 | 2426419 | 1931-03-18 | 314.64 |
| -84 | 2426738 | 1932-01-31 | 315.43 |
| -83 | 2427050 | 1932-12-08 | 315.36 |
| -82 | 2427369 | 1933-10-23 | 315.79 |
| -81 | 2427694 | 1934-09-13 | 315.93 |
| -80 | 2428002 | 1935-07-18 | 316.36 |
| -79 | 2428314 | 1936-05-25 | 317.07 |
| -78 | 2428633 | 1937-04-09 | 316.57 |
| -77 | 2428947 | 1938-02-17 | 317 |
| -76 | 2429270 | 1939-01-06 | 317.21 |
| -75 | 2429588 | 1939-11-20 | 316.14 |
| -74 | 2429907 | 1940-10-04 | 316.07 |
| -73 | 2430227 | 1941-08-20 | 316.57 |
| -72 | 2430530 | 1942-06-19 | 316.86 |
| -71 | 2430843 | 1943-04-28 | 316.21 |
| -70 | 2431162 | 1944-03-12 | 315.29 |
| -69 | 2431487 | 1945-01-31 | 315.57 |
| -68 | 2431807 | 1945-12-17 | 315.14 |
| -67 | 2432115 | 1946-10-21 | 316.64 |
| -66 | 2432433 | 1947-09-04 | 318 |
| -65 | 2432742 | 1948-07-09 | 317.21 |
| -64 | 2433043 | 1949-05-06 | 318.5 |
| -63 | 2433395 | 1950-04-23 | 319.5 |
| -62 | 2433706 | 1951-02-28 | 319.79 |
| -61 | 2434029 | 1952-01-17 | 321.5 |
| -60 | 2434352 | 1952-12-05 | 320.14 |
| -59 | 2434669 | 1953-10-18 | 317.79 |
| -58 | 2434983 | 1954-08-28 | 317.93 |
| -57 | 2435303 | 1955-07-14 | 318.43 |
| -56 | 2435617 | 1956-05-23 | 319.36 |
| -55 | 2435933 | 1957-04-04 | 320.14 |
| -54 | 2436253 | 1958-02-18 | 320.79 |
| -53 | 2436586 | 1959-01-17 | 320.36 |
| -52 | 2436906 | 1959-12-03 | 320.21 |
| -51 | 2437228 | 1960-10-20 | 320.36 |
| -50 | 2437549 | 1961-09-06 | 318.79 |
| -49 | 2437856 | 1962-07-10 | 316.79 |
| -48 | 2438177 | 1963-05-27 | 315.43 |
| -47 | 2438494 | 1964-04-08 | 314.14 |
| -46 | 2438808 | 1965-02-16 | 313.93 |
| -45 | 2439119 | 1965-12-24 | 313.29 |
| -44 | 2439431 | 1966-11-01 | 312 |
| -43 | 2439744 | 1967-09-10 | 311.5 |
| -42 | 2440056 | 1968-07-18 | 312.43 |
| -41 | 2440363 | 1969-05-21 | 313.57 |
| -40 | 2440676 | 1970-03-30 | 313.07 |
| -39 | 2440987 | 1971-02-04 | 312.14 |
| -38 | 2441314 | 1971-12-28 | 313 |
| -37 | 2441626 | 1972-11-04 | 313.5 |
| -36 | 2441932 | 1973-09-06 | 312.86 |
| -35 | 2442238 | 1974-07-09 | 312.36 |
| -34 | 2442563 | 1975-05-30 | 311.5 |
| -33 | 2442865 | 1976-03-27 | 311.79 |
| -32 | 2443178 | 1977-02-03 | 313.43 |
| -31 | 2443496 | 1977-12-18 | 313.71 |
| -30 | 2443805 | 1978-10-23 | 313.57 |
| -29 | 2444118 | 1979-09-01 | 314 |
| -28 | 2444440 | 1980-07-19 | 313.07 |
| -27 | 2444753 | 1981-05-28 | 312.86 |
| -26 | 2445065 | 1982-04-05 | 313.5 |
| -25 | 2445374 | 1983-02-08 | 312.71 |
| -24 | 2445683 | 1983-12-14 | 312 |
| -23 | 2445998 | 1984-10-24 | 312.57 |
| -22 | 2446314 | 1985-09-05 | 313.5 |
| -21 | 2446622 | 1986-07-10 | 314.57 |
| -20 | 2446939 | 1987-05-23 | 315.14 |
| -19 | 2447255 | 1988-04-03 | 315.21 |
| -18 | 2447573 | 1989-02-15 | 315.57 |
| -17 | 2447888 | 1989-12-27 | 315.79 |
| -16 | 2448205 | 1990-11-09 | 316.14 |
| -15 | 2448520 | 1991-09-20 | 316.79 |
| -14 | 2448834 | 1992-07-30 | 316.43 |
| -13 | 2449148 | 1993-06-09 | 316.21 |
| -12 | 2449472 | 1994-04-29 | 316.79 |
| -11 | 2449791 | 1995-03-14 | 317.07 |
| -10 | 2450100 | 1996-01-17 | 316.36 |
| -9 | 2450420 | 1996-12-02 | 314.86 |
| -8 | 2450740 | 1997-10-18 | 314.29 |
| -7 | 2451053 | 1998-08-27 | 314.57 |
| -6 | 2451358 | 1999-06-28 | 313.14 |
| -5 | 2451670 | 2000-05-05 | 310.86 |
| -4 | 2451993 | 2001-03-24 | 310.71 |
| -3 | 2452302 | 2002-01-27 | 310.93 |
| -2 | 2452602 | 2002-11-23 | 310.43 |
| -1 | 2452910 | 2003-09-27 | 309.5 |
| 0 | 2453233 | 2004-08-15 | 309.5 |
| 1 | 2453531 | 2005-06-09 | 310.64 |
| 2 | 2453843 | 2006-04-17 | 312.36 |
| 3 | 2454153 | 2007-02-21 | 312.57 |
| 4 | 2454475 | 2008-01-09 | 312.43 |
| 5 | 2454778 | 2008-11-07 | 315 |
| 6 | 2455107 | 2009-10-02 | 316.86 |
| 7 | 2455412 | 2010-08-03 | 316.64 |
| 8 | 2455726 | 2011-06-13 | 316.21 |
| 9 | 2456058 | 2012-05-10 | 315.71 |
| 10 | 2456374 | 2013-03-22 | 316.64 |
| 11 | 2456687 | 2014-01-29 | 319.21 |
| 12 | 2456993 | 2014-12-01 | 319.86 |
| 13 | 2457312 | 2015-10-16 | 319.86 |
| 14 | 2457640 | 2016-09-08 | 319.57 |
| 15 | 2457967 | 2017-08-01 | 319.29 |
| 16 | 2458295 | 2018-06-25 | 319.86 |
| 17 | 2458615 | 2019-05-11 | 319.5 |
| 18 | 2458920 | 2020-03-11 | 318.65 |
| 19 | 2459230 | 2021-01-15 | 316.29 |
| 20 | 2459553 | 2021-12-04 | 312.92 |
| 21 | 2459872 | 2022-10-19 | 311.5 |
| 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. |