| E | O (JD) | O (dat) | Period |
| -87 | 2412070 | 1891-12-03 | 336.72 |
| -84 | 2413060 | 1894-08-19 | 336.9 |
| -77 | 2415435 | 1901-02-19 | 337.07 |
| -76 | 2415760 | 1902-01-10 | 336.76 |
| -75 | 2416104 | 1902-12-20 | 336.62 |
| -74 | 2416440 | 1903-11-21 | 336.62 |
| -73 | 2416782 | 1904-10-28 | 337.42 |
| -72 | 2417121 | 1905-10-02 | 338.15 |
| -71 | 2417440 | 1906-08-17 | 338.77 |
| -70 | 2417780 | 1907-07-23 | 340.55 |
| -69 | 2418122 | 1908-06-29 | 342.25 |
| -68 | 2418470 | 1909-06-12 | 342.55 |
| -67 | 2418828 | 1910-06-05 | 342.25 |
| -66 | 2419148 | 1911-04-21 | 341.75 |
| -65 | 2419526 | 1912-05-03 | 340.24 |
| -64 | 2419865 | 1913-04-07 | 339.25 |
| -63 | 2420183 | 1914-02-19 | 338.31 |
| -62 | 2420508 | 1915-01-10 | 337.69 |
| -61 | 2420842 | 1915-12-10 | 337.38 |
| -60 | 2421181 | 1916-11-13 | 336.15 |
| -59 | 2421533 | 1917-10-31 | 336.71 |
| -58 | 2421874 | 1918-10-07 | 338.23 |
| -57 | 2422214 | 1919-09-12 | 338.04 |
| -56 | 2422540 | 1920-08-03 | 336.91 |
| -55 | 2422878 | 1921-07-07 | 335.98 |
| -54 | 2423210 | 1922-06-04 | 334.21 |
| -53 | 2423561 | 1923-05-21 | 333.77 |
| -52 | 2423881 | 1924-04-05 | 333.82 |
| -51 | 2424210 | 1925-02-28 | 333.91 |
| -50 | 2424554 | 1926-02-07 | 333.65 |
| -49 | 2424871 | 1926-12-21 | 333.4 |
| -48 | 2425216 | 1927-12-01 | 332.85 |
| -47 | 2425554 | 1928-11-03 | 333.01 |
| -46 | 2425883 | 1929-09-28 | 331.82 |
| -45 | 2426218 | 1930-08-29 | 330.72 |
| -44 | 2426548 | 1931-07-25 | 330.52 |
| -43 | 2426877 | 1932-06-18 | 329.95 |
| -42 | 2427205 | 1933-05-12 | 330.13 |
| -41 | 2427520 | 1934-03-23 | 330.8 |
| -40 | 2427855 | 1935-02-21 | 331.1 |
| -39 | 2428191 | 1936-01-23 | 331.47 |
| -38 | 2428530 | 1936-12-27 | 331.21 |
| -37 | 2428864 | 1937-11-26 | 330.96 |
| -36 | 2429199 | 1938-10-27 | 331.13 |
| -35 | 2429525 | 1939-09-18 | 331.38 |
| -34 | 2429853 | 1940-08-11 | 331.08 |
| -33 | 2430170 | 1941-06-24 | 331.37 |
| -32 | 2430500 | 1942-05-20 | 332.51 |
| -31 | 2430840 | 1943-04-25 | 333.67 |
| -30 | 2431191 | 1944-04-10 | 335.47 |
| -29 | 2431511 | 1945-02-24 | 336.78 |
| -28 | 2431852 | 1946-01-31 | 338.74 |
| -27 | 2432196 | 1947-01-10 | 339.52 |
| -26 | 2432529 | 1947-12-09 | 339.62 |
| -25 | 2432874 | 1948-11-18 | 339.63 |
| -24 | 2433207 | 1949-10-17 | 339.76 |
| -23 | 2433564 | 1950-10-09 | 339.27 |
| -22 | 2433900 | 1951-09-10 | 339.17 |
| -21 | 2434235 | 1952-08-10 | 339.31 |
| -20 | 2434572 | 1953-07-13 | 338.89 |
| -19 | 2434900 | 1954-06-06 | 339.1 |
| -18 | 2435244 | 1955-05-16 | 338.95 |
| -17 | 2435590 | 1956-04-26 | 339.63 |
| -16 | 2435930 | 1957-04-01 | 339.89 |
| -15 | 2436265 | 1958-03-02 | 339.85 |
| -14 | 2436612 | 1959-02-12 | 339.95 |
| -13 | 2436952 | 1960-01-18 | 338.89 |
| -12 | 2437291 | 1960-12-22 | 337.99 |
| -11 | 2437624 | 1961-11-20 | 337.61 |
| -10 | 2437960 | 1962-10-22 | 336.92 |
| -9 | 2438304 | 1963-10-01 | 336.06 |
| -8 | 2438631 | 1964-08-23 | 335.51 |
| -7 | 2438968 | 1965-07-26 | 335.19 |
| -6 | 2439309 | 1966-07-02 | 335 |
| -5 | 2439638 | 1967-05-27 | 334.97 |
| -4 | 2439974 | 1968-04-27 | 335.15 |
| -3 | 2440306 | 1969-03-25 | 335.49 |
| -2 | 2440642 | 1970-02-24 | 335.23 |
| -1 | 2440976 | 1971-01-24 | 335.05 |
| 0 | 2441317 | 1971-12-31 | 335.25 |
| 1 | 2441657 | 1972-12-05 | 335.04 |
| 2 | 2441987 | 1973-10-31 | 334.85 |
| 3 | 2442318 | 1974-09-27 | 334.44 |
| 4 | 2442653 | 1975-08-28 | 334.11 |
| 5 | 2442989 | 1976-07-29 | 333.49 |
| 6 | 2443321 | 1977-06-26 | 333.42 |
| 7 | 2443655 | 1978-05-26 | 333.32 |
| 8 | 2443988 | 1979-04-24 | 332.68 |
| 9 | 2444323 | 1980-03-24 | 332.25 |
| 10 | 2444652 | 1981-02-16 | 331.96 |
| 11 | 2444990 | 1982-01-20 | 331.29 |
| 12 | 2445316 | 1982-12-12 | 330.57 |
| 13 | 2445640 | 1983-11-01 | 329.76 |
| 14 | 2445978 | 1984-10-04 | 329.57 |
| 15 | 2446311 | 1985-09-02 | 329.45 |
| 16 | 2446631 | 1986-07-19 | 329.02 |
| 17 | 2446960 | 1987-06-13 | 329.07 |
| 18 | 2447285 | 1988-05-03 | 329.26 |
| 19 | 2447625 | 1989-04-08 | 329.26 |
| 20 | 2447952 | 1990-03-01 | 329.45 |
| 21 | 2448276 | 1991-01-19 | 329.65 |
| 22 | 2448606 | 1991-12-15 | 329.3 |
| 23 | 2448941 | 1992-11-14 | 329.18 |
| 24 | 2449273 | 1993-10-12 | 329.4 |
| 25 | 2449598 | 1994-09-02 | 330.44 |
| 26 | 2449923 | 1995-07-24 | 331.28 |
| 27 | 2450249 | 1996-06-14 | 332.1 |
| 28 | 2450583 | 1997-05-14 | 332.76 |
| 29 | 2450925 | 1998-04-21 | 333.85 |
| 30 | 2451263 | 1999-03-25 | 335.05 |
| 31 | 2451594 | 2000-02-19 | 335.78 |
| 32 | 2451933 | 2001-01-23 | 336 |
| 33 | 2452265 | 2001-12-21 | 335.91 |
| 34 | 2452604 | 2002-11-25 | 335.92 |
| 35 | 2452941 | 2003-10-28 | 335.9 |
| 36 | 2453274 | 2004-09-25 | 336.65 |
| 37 | 2453608 | 2005-08-25 | 337.46 |
| 38 | 2453947 | 2006-07-30 | 337.73 |
| 39 | 2454288 | 2007-07-06 | 338.1 |
| 40 | 2454618 | 2008-05-31 | 338.71 |
| 41 | 2454968 | 2009-05-16 | 339.24 |
| 42 | 2455313 | 2010-04-26 | 339.41 |
| 43 | 2455638 | 2011-03-17 | 339.11 |
| 44 | 2455983 | 2012-02-25 | 338.43 |
| 45 | 2456325 | 2013-02-01 | 337.96 |
| 46 | 2456663 | 2014-01-05 | 337.5 |
| 47 | 2457000 | 2014-12-08 | 337.52 |
| 48 | 2457334 | 2015-11-07 | 337.82 |
| 49 | 2457664 | 2016-10-02 | 336.8 |
| 50 | 2458003 | 2017-09-06 | 335.94 |
| 51 | 2458350 | 2018-08-19 | 335.81 |
| 52 | 2458687 | 2019-07-22 | 335.77 |
| 53 | 2459023 | 2020-06-22 | 335.81 |
| 54 | 2459346 | 2021-05-11 | 335.64 |
| 55 | 2459677 | 2022-04-07 | 334.11 |
| 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. |