| E | O (JD) | O (dat) | Period |
| -69 | 2413415 | 1895-08-09 | 332.57 |
| -68 | 2413750 | 1896-07-09 | 334.09 |
| -65 | 2414730 | 1899-03-16 | 334.99 |
| -64 | 2415060 | 1900-02-09 | 332.54 |
| -59 | 2416733 | 1904-09-09 | 331.35 |
| -58 | 2417090 | 1905-09-01 | 329.29 |
| -57 | 2417410 | 1906-07-18 | 327.83 |
| -56 | 2417730 | 1907-06-03 | 326.62 |
| -55 | 2418050 | 1908-04-18 | 323.32 |
| -50 | 2419650 | 1912-09-04 | 323 |
| -49 | 2419975 | 1913-07-26 | 325.93 |
| -48 | 2420310 | 1914-06-26 | 326.25 |
| -47 | 2420626 | 1915-05-08 | 327.14 |
| -46 | 2420980 | 1916-04-26 | 329.58 |
| -40 | 2422960 | 1921-09-27 | 330.37 |
| -39 | 2423260 | 1922-07-24 | 331.37 |
| -38 | 2423600 | 1923-06-29 | 331.42 |
| -37 | 2423935 | 1924-05-29 | 329.64 |
| -36 | 2424279 | 1925-05-08 | 329.6 |
| -35 | 2424610 | 1926-04-04 | 332 |
| -34 | 2424950 | 1927-03-10 | 332.25 |
| -30 | 2426242 | 1930-09-22 | 331.7 |
| -29 | 2426570 | 1931-08-16 | 331.7 |
| -28 | 2426930 | 1932-08-10 | 332.25 |
| -27 | 2427250 | 1933-06-26 | 335.18 |
| -26 | 2427598 | 1934-06-09 | 337.21 |
| -25 | 2427925 | 1935-05-02 | 335.33 |
| -24 | 2428280 | 1936-04-21 | 335.04 |
| -23 | 2428610 | 1937-03-17 | 336 |
| -17 | 2430609 | 1942-09-06 | 336.12 |
| -16 | 2430939 | 1943-08-02 | 336.17 |
| -15 | 2431282 | 1944-07-10 | 336.37 |
| -14 | 2431630 | 1945-06-23 | 338.93 |
| -13 | 2431960 | 1946-05-19 | 339.07 |
| -12 | 2432313 | 1947-05-07 | 339.3 |
| -11 | 2432650 | 1948-04-08 | 336.21 |
| -2 | 2435720 | 1956-09-03 | 334.09 |
| -1 | 2436000 | 1957-06-10 | 334.09 |
| 0 | 2436400 | 1958-07-15 | 333.8 |
| 18 | 2442314 | 1974-09-23 | 332.48 |
| 19 | 2442658 | 1975-09-02 | 331.87 |
| 20 | 2442997 | 1976-08-06 | 330.39 |
| 21 | 2443329 | 1977-07-04 | 328.54 |
| 22 | 2443660 | 1978-05-31 | 329.05 |
| 23 | 2443990 | 1979-04-26 | 327.55 |
| 27 | 2445260 | 1982-10-17 | 326.35 |
| 28 | 2445610 | 1983-10-02 | 325.55 |
| 29 | 2445943 | 1984-08-30 | 326 |
| 30 | 2446263 | 1985-07-16 | 331.43 |
| 31 | 2446590 | 1986-06-08 | 335.45 |
| 32 | 2446910 | 1987-04-24 | 336.18 |
| 33 | 2447260 | 1988-04-08 | 337.77 |
| 38 | 2448950 | 1992-11-23 | 339.23 |
| 39 | 2449300 | 1993-11-08 | 340.73 |
| 40 | 2449649 | 1994-10-23 | 341.64 |
| 41 | 2449988 | 1995-09-27 | 342.56 |
| 42 | 2450328 | 1996-09-01 | 343.36 |
| 43 | 2450668 | 1997-08-07 | 342 |
| 44 | 2451018 | 1998-07-23 | 341.57 |
| 45 | 2451358 | 1999-06-28 | 342.14 |
| 46 | 2451699 | 2000-06-03 | 342.07 |
| 47 | 2452038 | 2001-05-08 | 341.79 |
| 48 | 2452381 | 2002-04-16 | 341.64 |
| 49 | 2452725 | 2003-03-26 | 343.07 |
| 50 | 2453060 | 2004-02-24 | 344.21 |
| 51 | 2453411 | 2005-02-09 | 342.14 |
| 52 | 2453748 | 2006-01-12 | 339.93 |
| 53 | 2454112 | 2007-01-11 | 339.5 |
| 54 | 2454444 | 2007-12-09 | 338.86 |
| 55 | 2454765 | 2008-10-25 | 336.79 |
| 56 | 2455100 | 2009-09-25 | 334.43 |
| 57 | 2455438 | 2010-08-29 | 333.57 |
| 58 | 2455777 | 2011-08-03 | 334.29 |
| 59 | 2456097 | 2012-06-18 | 334.5 |
| 60 | 2456445 | 2013-06-01 | 333.5 |
| 61 | 2456781 | 2014-05-03 | 332.29 |
| 62 | 2457108 | 2015-03-26 | 332.21 |
| 63 | 2457440 | 2016-02-21 | 331.57 |
| 64 | 2457767 | 2017-01-13 | 329.93 |
| 65 | 2458100 | 2017-12-12 | 329.5 |
| 66 | 2458425 | 2018-11-02 | 329.64 |
| 67 | 2458759 | 2019-10-02 | 329.73 |
| 68 | 2459086 | 2020-08-24 | 329.46 |
| 69 | 2459416 | 2021-07-20 | 329.83 |
| 70 | 2459747 | 2022-06-16 | 330.8 |
| 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. |