| E | O (JD) | O (dat) | Period |
| -90 | 2414502 | 1898-07-31 | 271.86 |
| -89 | 2414757 | 1899-04-12 | 273.6 |
| -87 | 2415307 | 1900-10-14 | 274.25 |
| -86 | 2415581 | 1901-07-15 | 273.88 |
| -83 | 2416390 | 1903-10-02 | 273.46 |
| -82 | 2416675 | 1904-07-13 | 273.21 |
| -81 | 2416969 | 1905-05-03 | 273.58 |
| -80 | 2417239 | 1906-01-28 | 273.43 |
| -79 | 2417495 | 1906-10-11 | 273.52 |
| -78 | 2417763 | 1907-07-06 | 273.66 |
| -77 | 2418037 | 1908-04-05 | 272.62 |
| -76 | 2418312 | 1909-01-05 | 272.72 |
| -75 | 2418592 | 1909-10-12 | 273.84 |
| -74 | 2418869 | 1910-07-16 | 274.17 |
| -71 | 2419690 | 1912-10-14 | 273.98 |
| -70 | 2419949 | 1913-06-30 | 273.65 |
| -68 | 2420508 | 1915-01-10 | 273.2 |
| -67 | 2420793 | 1915-10-22 | 272.52 |
| -66 | 2421049 | 1916-07-04 | 271.77 |
| -65 | 2421321 | 1917-04-02 | 270.84 |
| -64 | 2421595 | 1918-01-01 | 270.13 |
| -63 | 2421865 | 1918-09-28 | 269.18 |
| -62 | 2422131 | 1919-06-21 | 269.88 |
| -61 | 2422396 | 1920-03-12 | 270.89 |
| -60 | 2422663 | 1920-12-04 | 271.46 |
| -59 | 2422931 | 1921-08-29 | 272.24 |
| -58 | 2423214 | 1922-06-08 | 273.28 |
| -57 | 2423499 | 1923-03-20 | 274.41 |
| -56 | 2423762 | 1923-12-08 | 275.52 |
| -55 | 2424039 | 1924-09-10 | 276.1 |
| -54 | 2424315 | 1925-06-13 | 276.68 |
| -53 | 2424591 | 1926-03-16 | 276.11 |
| -52 | 2424868 | 1926-12-18 | 276.12 |
| -51 | 2425149 | 1927-09-25 | 277.02 |
| -50 | 2425423 | 1928-06-25 | 277.06 |
| -49 | 2425708 | 1929-04-06 | 277.06 |
| -48 | 2425970 | 1929-12-24 | 276.61 |
| -47 | 2426251 | 1930-10-01 | 275.91 |
| -46 | 2426536 | 1931-07-13 | 275.15 |
| -45 | 2426809 | 1932-04-11 | 275.1 |
| -44 | 2427085 | 1933-01-12 | 274.7 |
| -43 | 2427353 | 1933-10-07 | 274.14 |
| -42 | 2427624 | 1934-07-05 | 272.52 |
| -41 | 2427897 | 1935-04-04 | 271.42 |
| -40 | 2428181 | 1936-01-13 | 271.02 |
| -39 | 2428451 | 1936-10-09 | 270.45 |
| -38 | 2428711 | 1937-06-26 | 270.16 |
| -37 | 2428974 | 1938-03-16 | 270.41 |
| -36 | 2429249 | 1938-12-16 | 270.84 |
| -35 | 2429522 | 1939-09-15 | 271.52 |
| -34 | 2429788 | 1940-06-07 | 272.56 |
| -32 | 2430329 | 1941-11-30 | 273.77 |
| -31 | 2430613 | 1942-09-10 | 274.7 |
| -30 | 2430891 | 1943-06-15 | 275.34 |
| -29 | 2431170 | 1944-03-20 | 276.34 |
| -28 | 2431440 | 1944-12-15 | 277.38 |
| -27 | 2431718 | 1945-09-19 | 278.21 |
| -26 | 2431997 | 1946-06-25 | 277.87 |
| -24 | 2432550 | 1947-12-30 | 277.86 |
| -23 | 2432835 | 1948-10-10 | 277.99 |
| -22 | 2433115 | 1949-07-17 | 278.17 |
| -21 | 2433397 | 1950-04-25 | 278.06 |
| -20 | 2433663 | 1951-01-16 | 277.91 |
| -19 | 2433942 | 1951-10-22 | 278.01 |
| -18 | 2434222 | 1952-07-28 | 277.55 |
| -17 | 2434499 | 1953-05-01 | 277.64 |
| -16 | 2434778 | 1954-02-04 | 277.45 |
| -15 | 2435056 | 1954-11-09 | 277.27 |
| -14 | 2435339 | 1955-08-19 | 276.35 |
| -13 | 2435609 | 1956-05-15 | 275.46 |
| -12 | 2435891 | 1957-02-21 | 274.64 |
| -11 | 2436160 | 1957-11-17 | 274.32 |
| -10 | 2436431 | 1958-08-15 | 273.92 |
| -9 | 2436702 | 1959-05-13 | 273.65 |
| -8 | 2436976 | 1960-02-11 | 273.81 |
| -7 | 2437248 | 1960-11-09 | 274.15 |
| -6 | 2437532 | 1961-08-20 | 274.88 |
| -5 | 2437802 | 1962-05-17 | 274.6 |
| -4 | 2438076 | 1963-02-15 | 274.33 |
| -3 | 2438350 | 1963-11-16 | 273.84 |
| -2 | 2438632 | 1964-08-24 | 273.6 |
| -1 | 2438907 | 1965-05-26 | 273.15 |
| 0 | 2439165 | 1966-02-08 | 273.08 |
| 1 | 2439441 | 1966-11-11 | 272.76 |
| 2 | 2439713 | 1967-08-10 | 272.58 |
| 3 | 2439992 | 1968-05-15 | 272.21 |
| 4 | 2440264 | 1969-02-11 | 272.68 |
| 5 | 2440535 | 1969-11-09 | 273.32 |
| 6 | 2440806 | 1970-08-07 | 273.25 |
| 7 | 2441081 | 1971-05-09 | 273.55 |
| 8 | 2441349 | 1972-02-01 | 273.43 |
| 9 | 2441629 | 1972-11-07 | 273.85 |
| 10 | 2441902 | 1973-08-07 | 274.02 |
| 11 | 2442176 | 1974-05-08 | 274.18 |
| 12 | 2442455 | 1975-02-11 | 274.02 |
| 13 | 2442722 | 1975-11-05 | 274.44 |
| 14 | 2443001 | 1976-08-10 | 275.01 |
| 15 | 2443271 | 1977-05-07 | 275.59 |
| 16 | 2443547 | 1978-02-07 | 276.28 |
| 17 | 2443817 | 1978-11-04 | 277.2 |
| 18 | 2444102 | 1979-08-16 | 277.89 |
| 19 | 2444388 | 1980-05-28 | 278.42 |
| 20 | 2444660 | 1981-02-24 | 278.65 |
| 21 | 2444941 | 1981-12-02 | 278.39 |
| 22 | 2445225 | 1982-09-12 | 277.48 |
| 23 | 2445495 | 1983-06-09 | 275.87 |
| 24 | 2445779 | 1984-03-19 | 275.12 |
| 25 | 2446049 | 1984-12-14 | 274.73 |
| 26 | 2446324 | 1985-09-15 | 273.96 |
| 27 | 2446589 | 1986-06-07 | 273.55 |
| 28 | 2446858 | 1987-03-03 | 273.25 |
| 29 | 2447143 | 1987-12-13 | 273.01 |
| 30 | 2447416 | 1988-09-11 | 272.96 |
| 31 | 2447687 | 1989-06-09 | 272.97 |
| 32 | 2447963 | 1990-03-12 | 273.25 |
| 33 | 2448229 | 1990-12-03 | 272.89 |
| 34 | 2448507 | 1991-09-07 | 272.48 |
| 35 | 2448773 | 1992-05-30 | 272.96 |
| 36 | 2449049 | 1993-03-02 | 273.55 |
| 37 | 2449325 | 1993-12-03 | 273.95 |
| 38 | 2449593 | 1994-08-28 | 274.45 |
| 39 | 2449870 | 1995-06-01 | 274.59 |
| 40 | 2450150 | 1996-03-07 | 275.33 |
| 41 | 2450426 | 1996-12-08 | 275.77 |
| 42 | 2450699 | 1997-09-07 | 276.08 |
| 43 | 2450972 | 1998-06-07 | 276.24 |
| 44 | 2451247 | 1999-03-09 | 276.29 |
| 45 | 2451530 | 1999-12-17 | 276.11 |
| 46 | 2451809 | 2000-09-21 | 276.18 |
| 47 | 2452082 | 2001-06-21 | 276.68 |
| 48 | 2452354 | 2002-03-20 | 276.68 |
| 49 | 2452636 | 2002-12-27 | 276.35 |
| 50 | 2452907 | 2003-09-24 | 276.05 |
| 51 | 2453184 | 2004-06-27 | 276.44 |
| 52 | 2453469 | 2005-04-08 | 276.26 |
| 53 | 2453739 | 2006-01-03 | 276.05 |
| 54 | 2454012 | 2006-10-03 | 275.6 |
| 55 | 2454291 | 2007-07-09 | 275.35 |
| 56 | 2454575 | 2008-04-18 | 274.43 |
| 57 | 2454837 | 2009-01-05 | 273.75 |
| 58 | 2455114 | 2009-10-09 | 273.84 |
| 59 | 2455389 | 2010-07-11 | 273.39 |
| 60 | 2455662 | 2011-04-10 | 273.37 |
| 61 | 2455927 | 2011-12-31 | 273.37 |
| 62 | 2456204 | 2012-10-03 | 273.88 |
| 63 | 2456483 | 2013-07-09 | 274.16 |
| 64 | 2456750 | 2014-04-02 | 274.59 |
| 65 | 2457034 | 2015-01-11 | 274.85 |
| 66 | 2457304 | 2015-10-08 | 275.05 |
| 67 | 2457577 | 2016-07-07 | 274.56 |
| 68 | 2457858 | 2017-04-14 | 274.19 |
| 69 | 2458133 | 2018-01-14 | 274.34 |
| 70 | 2458403 | 2018-10-11 | 274.06 |
| 71 | 2458677 | 2019-07-12 | 274.17 |
| 72 | 2458947 | 2020-04-07 | 274.02 |
| 73 | 2459221 | 2021-01-06 | 273.61 |
| 74 | 2459501 | 2021-10-13 | 273.79 |
| 75 | 2459775 | 2022-07-14 | 274.46 |
| 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. |