| E | O (JD) | O (dat) | Period |
| -116 | 2411585 | 1890-08-05 | 263.48 |
| -104 | 2414745 | 1899-03-31 | 263.94 |
| -102 | 2415280 | 1900-09-17 | 264.82 |
| -101 | 2415542 | 1901-06-06 | 263.93 |
| -98 | 2416330 | 1903-08-03 | 263.87 |
| -97 | 2416601 | 1904-04-30 | 264 |
| -96 | 2416870 | 1905-01-24 | 263.58 |
| -95 | 2417119 | 1905-09-30 | 263.95 |
| -94 | 2417391 | 1906-06-29 | 265.37 |
| -93 | 2417650 | 1907-03-15 | 265.83 |
| -91 | 2418180 | 1908-08-26 | 265.54 |
| -90 | 2418443 | 1909-05-16 | 265.71 |
| -86 | 2419530 | 1912-05-07 | 265.64 |
| -84 | 2420055 | 1913-10-14 | 265.48 |
| -83 | 2420307 | 1914-06-23 | 265.92 |
| -82 | 2420580 | 1915-03-23 | 265.54 |
| -80 | 2421102 | 1916-08-26 | 263.68 |
| -79 | 2421365 | 1917-05-16 | 263.84 |
| -78 | 2421640 | 1918-02-15 | 264.15 |
| -76 | 2422175 | 1919-08-04 | 264.31 |
| -75 | 2422420 | 1920-04-05 | 264.84 |
| -73 | 2422955 | 1921-09-22 | 263.85 |
| -72 | 2423215 | 1922-06-09 | 262.35 |
| -71 | 2423489 | 1923-03-10 | 261.95 |
| -69 | 2424010 | 1924-08-12 | 262.06 |
| -68 | 2424272 | 1925-05-01 | 261.85 |
| -66 | 2424790 | 1926-10-01 | 261.55 |
| -65 | 2425044 | 1927-06-12 | 261.05 |
| -64 | 2425310 | 1928-03-04 | 261.3 |
| -62 | 2425835 | 1929-08-11 | 262.42 |
| -61 | 2426100 | 1930-05-03 | 263.16 |
| -59 | 2426620 | 1931-10-05 | 263.35 |
| -58 | 2426888 | 1932-06-29 | 264.05 |
| -57 | 2427160 | 1933-03-28 | 263.58 |
| -55 | 2427674 | 1934-08-24 | 263.16 |
| -54 | 2427947 | 1935-05-24 | 263.6 |
| -53 | 2428215 | 1936-02-16 | 263.18 |
| -51 | 2428728 | 1937-07-13 | 264.09 |
| -50 | 2428992 | 1938-04-03 | 264.32 |
| -47 | 2429788 | 1940-06-07 | 263.41 |
| -46 | 2430050 | 1941-02-24 | 264.76 |
| -44 | 2430594 | 1942-08-22 | 266 |
| -43 | 2430842 | 1943-04-27 | 265.83 |
| -40 | 2431642 | 1945-07-05 | 265.74 |
| -39 | 2431920 | 1946-04-09 | 265.04 |
| -37 | 2432450 | 1947-09-21 | 265.09 |
| -36 | 2432710 | 1948-06-07 | 265.73 |
| -34 | 2433240 | 1949-11-19 | 265 |
| -33 | 2433500 | 1950-08-06 | 264.33 |
| -32 | 2433768 | 1951-05-01 | 264.04 |
| -29 | 2434562 | 1953-07-03 | 264.11 |
| -28 | 2434830 | 1954-03-28 | 263.81 |
| -24 | 2435884 | 1957-02-14 | 263.61 |
| -22 | 2436405 | 1958-07-20 | 262.87 |
| -21 | 2436676 | 1959-04-17 | 262.36 |
| -19 | 2437187 | 1960-09-09 | 262.21 |
| -18 | 2437462 | 1961-06-11 | 262.14 |
| -4 | 2441120 | 1971-06-17 | 262.19 |
| -1 | 2441915 | 1973-08-20 | 262.51 |
| 0 | 2442172 | 1974-05-04 | 262.76 |
| 2 | 2442700 | 1975-10-14 | 263.31 |
| 3 | 2442966 | 1976-07-06 | 264.66 |
| 6 | 2443760 | 1978-09-08 | 265.2 |
| 7 | 2444027 | 1979-06-02 | 265.64 |
| 10 | 2444824 | 1981-08-07 | 265.5 |
| 11 | 2445092 | 1982-05-02 | 265.64 |
| 13 | 2445625 | 1983-10-17 | 265.6 |
| 14 | 2445888 | 1984-07-06 | 264.83 |
| 15 | 2446150 | 1985-03-25 | 263.93 |
| 16 | 2446420 | 1985-12-20 | 263.59 |
| 17 | 2446679 | 1986-09-05 | 263.36 |
| 18 | 2446939 | 1987-05-23 | 264.08 |
| 19 | 2447200 | 1988-02-08 | 263.14 |
| 20 | 2447471 | 1988-11-05 | 261.5 |
| 21 | 2447729 | 1989-07-21 | 262.43 |
| 22 | 2448006 | 1990-04-24 | 262.93 |
| 23 | 2448248 | 1990-12-22 | 262.58 |
| 24 | 2448512 | 1991-09-12 | 262.5 |
| 25 | 2448780 | 1992-06-06 | 261.64 |
| 26 | 2449040 | 1993-02-21 | 262.14 |
| 27 | 2449307 | 1993-11-15 | 263.36 |
| 28 | 2449568 | 1994-08-03 | 262.86 |
| 29 | 2449830 | 1995-04-22 | 263 |
| 30 | 2450094 | 1996-01-11 | 263.14 |
| 31 | 2450353 | 1996-09-26 | 263.93 |
| 32 | 2450619 | 1997-06-19 | 265 |
| 33 | 2450883 | 1998-03-10 | 264.86 |
| 34 | 2451148 | 1998-11-30 | 265.35 |
| 35 | 2451422 | 1999-08-31 | 266.57 |
| 36 | 2451686 | 2000-05-21 | 267 |
| 37 | 2451946 | 2001-02-05 | 266.86 |
| 38 | 2452216 | 2001-11-02 | 266.08 |
| 39 | 2452488 | 2002-08-01 | 265.5 |
| 40 | 2452752 | 2003-04-22 | 265.78 |
| 41 | 2453015 | 2004-01-10 | 265.93 |
| 42 | 2453280 | 2004-10-01 | 265.22 |
| 43 | 2453545 | 2005-06-23 | 264.65 |
| 44 | 2453808 | 2006-03-13 | 264.14 |
| 45 | 2454077 | 2006-12-07 | 263.85 |
| 46 | 2454340 | 2007-08-27 | 264.71 |
| 47 | 2454605 | 2008-05-18 | 265.65 |
| 48 | 2454860 | 2009-01-28 | 265.36 |
| 49 | 2455129 | 2009-10-24 | 265 |
| 50 | 2455402 | 2010-07-24 | 265.28 |
| 51 | 2455670 | 2011-04-18 | 265.5 |
| 52 | 2455930 | 2012-01-03 | 264.86 |
| 53 | 2456197 | 2012-09-26 | 264.65 |
| 54 | 2456462 | 2013-06-18 | 265.35 |
| 55 | 2456720 | 2014-03-03 | 266.28 |
| 56 | 2456977 | 2014-11-15 | 267.5 |
| 57 | 2457259 | 2015-08-24 | 267.43 |
| 58 | 2457528 | 2016-05-19 | 267.36 |
| 59 | 2457800 | 2017-02-15 | 268.35 |
| 60 | 2458072 | 2017-11-14 | 267.43 |
| 61 | 2458331 | 2018-07-31 | 265.28 |
| 62 | 2458594 | 2019-04-20 | 264.29 |
| 63 | 2458860 | 2020-01-11 | 263.93 |
| 64 | 2459120 | 2020-09-27 | 263.87 |
| 65 | 2459381 | 2021-06-15 | 263.74 |
| 66 | 2459647 | 2022-03-08 | 263.33 |
| 67 | 2459920 | 2022-12-06 | 262.79 |
| 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. |