| E | O (JD) | O (dat) | Period |
| -69 | 2413415 | 1895-08-09 | 333.26 |
| -68 | 2413750 | 1896-07-09 | 332.96 |
| -65 | 2414735 | 1899-03-21 | 333.18 |
| -64 | 2415070 | 1900-02-19 | 333.18 |
| -62 | 2415750 | 1901-12-31 | 332.77 |
| -60 | 2416415 | 1903-10-27 | 332.17 |
| -59 | 2416739 | 1904-09-15 | 331.78 |
| -58 | 2417080 | 1905-08-22 | 330.79 |
| -57 | 2417410 | 1906-07-18 | 327.94 |
| -56 | 2417730 | 1907-06-03 | 325.19 |
| -55 | 2418050 | 1908-04-18 | 323.52 |
| -53 | 2418720 | 1910-02-17 | 322.62 |
| -51 | 2419365 | 1911-11-24 | 322.02 |
| -50 | 2419650 | 1912-09-04 | 323.26 |
| -49 | 2419975 | 1913-07-26 | 324.67 |
| -48 | 2420300 | 1914-06-16 | 325.47 |
| -47 | 2420626 | 1915-05-08 | 325.91 |
| -46 | 2420960 | 1916-04-06 | 327.61 |
| -41 | 2422600 | 1920-10-02 | 329.6 |
| -40 | 2422940 | 1921-09-07 | 330.45 |
| -39 | 2423260 | 1922-07-24 | 331.18 |
| -38 | 2423580 | 1923-06-09 | 331.38 |
| -37 | 2423930 | 1924-05-24 | 331.11 |
| -36 | 2424279 | 1925-05-08 | 332.14 |
| -35 | 2424610 | 1926-04-04 | 332.21 |
| -34 | 2424940 | 1927-02-28 | 332.77 |
| -30 | 2426250 | 1930-09-30 | 332.64 |
| -29 | 2426570 | 1931-08-16 | 332.62 |
| -28 | 2426930 | 1932-08-10 | 332.9 |
| -27 | 2427258 | 1933-07-04 | 333.87 |
| -26 | 2427600 | 1934-06-11 | 334.29 |
| -25 | 2427925 | 1935-05-02 | 335.13 |
| -24 | 2428280 | 1936-04-21 | 335.37 |
| -23 | 2428610 | 1937-03-17 | 335.4 |
| -17 | 2430609 | 1942-09-06 | 336.02 |
| -16 | 2430934 | 1943-07-28 | 336.27 |
| -15 | 2431281 | 1944-07-09 | 336.77 |
| -14 | 2431628 | 1945-06-21 | 338.23 |
| -13 | 2431975 | 1946-06-03 | 338.01 |
| -12 | 2432318 | 1947-05-12 | 339.61 |
| -11 | 2432650 | 1948-04-08 | 335.17 |
| -10 | 2432990 | 1949-03-14 | 334.17 |
| -2 | 2435720 | 1956-09-03 | 333.69 |
| -1 | 2436000 | 1957-06-10 | 333.32 |
| 0 | 2436400 | 1958-07-15 | 333.01 |
| 18 | 2442314 | 1974-09-23 | 332.67 |
| 19 | 2442658 | 1975-09-02 | 331.63 |
| 20 | 2442997 | 1976-08-06 | 330.34 |
| 21 | 2443329 | 1977-07-04 | 330.34 |
| 22 | 2443660 | 1978-05-31 | 328.69 |
| 23 | 2443990 | 1979-04-26 | 327.01 |
| 27 | 2445260 | 1982-10-17 | 326.35 |
| 28 | 2445603 | 1983-09-25 | 326.67 |
| 29 | 2445943 | 1984-08-30 | 329.16 |
| 30 | 2446263 | 1985-07-16 | 331.57 |
| 31 | 2446582 | 1986-05-31 | 334.24 |
| 32 | 2446920 | 1987-05-04 | 337.34 |
| 33 | 2447268 | 1988-04-16 | 337.97 |
| 38 | 2448950 | 1992-11-23 | 338.79 |
| 39 | 2449300 | 1993-11-08 | 340.07 |
| 40 | 2449649 | 1994-10-23 | 340.96 |
| 41 | 2449988 | 1995-09-27 | 341.27 |
| 42 | 2450328 | 1996-09-01 | 341.48 |
| 43 | 2450668 | 1997-08-07 | 342.61 |
| 44 | 2451018 | 1998-07-23 | 342.14 |
| 45 | 2451358 | 1999-06-28 | 341.66 |
| 46 | 2451699 | 2000-06-03 | 342 |
| 47 | 2452038 | 2001-05-08 | 341.95 |
| 48 | 2452381 | 2002-04-16 | 342.8 |
| 49 | 2452725 | 2003-03-26 | 342.89 |
| 50 | 2453060 | 2004-02-24 | 342.34 |
| 51 | 2453411 | 2005-02-09 | 341.49 |
| 52 | 2453748 | 2006-01-12 | 340.59 |
| 53 | 2454112 | 2007-01-11 | 339.6 |
| 54 | 2454444 | 2007-12-09 | 337.87 |
| 55 | 2454765 | 2008-10-25 | 336.95 |
| 56 | 2455100 | 2009-09-25 | 335.75 |
| 57 | 2455438 | 2010-08-29 | 334.73 |
| 58 | 2455777 | 2011-08-03 | 333.57 |
| 59 | 2456097 | 2012-06-18 | 333.57 |
| 60 | 2456445 | 2013-06-01 | 333.59 |
| 61 | 2456781 | 2014-05-03 | 332.65 |
| 62 | 2457108 | 2015-03-26 | 331.9 |
| 63 | 2457440 | 2016-02-21 | 331.18 |
| 64 | 2457767 | 2017-01-13 | 330.79 |
| 65 | 2458100 | 2017-12-12 | 329.82 |
| 66 | 2458425 | 2018-11-02 | 329.58 |
| 67 | 2458759 | 2019-10-02 | 329.68 |
| 68 | 2459086 | 2020-08-24 | 329.6 |
| 69 | 2459416 | 2021-07-20 | 329.75 |
| 70 | 2459747 | 2022-06-16 | 329.57 |
| 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. |