| E | O (JD) | O (dat) | Period |
| -74 | 2413530 | 1895-12-02 | 326.29 |
| -69 | 2415140 | 1900-04-30 | 327.62 |
| -68 | 2415466 | 1901-03-22 | 328.98 |
| -67 | 2415796 | 1902-02-15 | 327.78 |
| -66 | 2416125 | 1903-01-10 | 328.93 |
| -65 | 2416462 | 1903-12-13 | 331 |
| -64 | 2416790 | 1904-11-05 | 331.58 |
| -58 | 2418770 | 1910-04-08 | 332.29 |
| -57 | 2419110 | 1911-03-14 | 332.92 |
| -56 | 2419440 | 1912-02-07 | 334.59 |
| -55 | 2419780 | 1913-01-12 | 336.21 |
| -54 | 2420116 | 1913-12-14 | 336.61 |
| -52 | 2420794 | 1915-10-23 | 336.43 |
| -45 | 2423165 | 1922-04-20 | 336.66 |
| -44 | 2423490 | 1923-03-11 | 335.31 |
| -43 | 2423815 | 1924-01-30 | 333.95 |
| -42 | 2424155 | 1925-01-04 | 332.22 |
| -40 | 2424828 | 1926-11-08 | 330.96 |
| -34 | 2426804 | 1932-04-06 | 330.77 |
| -33 | 2427130 | 1933-02-26 | 330.17 |
| -32 | 2427460 | 1934-01-22 | 330.55 |
| -31 | 2427800 | 1934-12-28 | 330.28 |
| -30 | 2428105 | 1935-10-29 | 329.6 |
| -26 | 2429440 | 1939-06-25 | 329.6 |
| -25 | 2429790 | 1940-06-09 | 329.85 |
| -24 | 2430099 | 1941-04-14 | 331.85 |
| -23 | 2430427 | 1942-03-08 | 332.06 |
| -22 | 2430755 | 1943-01-30 | 329.29 |
| -21 | 2431102 | 1944-01-12 | 332.41 |
| -20 | 2431440 | 1944-12-15 | 333.05 |
| -19 | 2431750 | 1945-10-21 | 332.09 |
| -18 | 2432090 | 1946-09-26 | 332.13 |
| -14 | 2433450 | 1950-06-17 | 330.77 |
| -12 | 2434070 | 1952-02-27 | 331.32 |
| -11 | 2434418 | 1953-02-09 | 332.06 |
| -8 | 2435410 | 1955-10-29 | 330.26 |
| -3 | 2437055 | 1960-04-30 | 329.85 |
| -2 | 2437400 | 1961-04-10 | 330.38 |
| -1 | 2437730 | 1962-03-06 | 329.25 |
| 0 | 2438048 | 1963-01-18 | 330.05 |
| 1 | 2438378 | 1963-12-14 | 330.06 |
| 2 | 2438700 | 1964-10-31 | 328.61 |
| 3 | 2439030 | 1965-09-26 | 329.39 |
| 5 | 2439706 | 1967-08-03 | 330.89 |
| 7 | 2440360 | 1969-05-18 | 331.78 |
| 8 | 2440685 | 1970-04-08 | 332.22 |
| 9 | 2441022 | 1971-03-11 | 331.41 |
| 10 | 2441360 | 1972-02-12 | 330.6 |
| 11 | 2441690 | 1973-01-07 | 331.43 |
| 12 | 2442020 | 1973-12-03 | 332.87 |
| 13 | 2442350 | 1974-10-29 | 332.82 |
| 14 | 2442675 | 1975-09-19 | 332.5 |
| 15 | 2443010 | 1976-08-19 | 333.78 |
| 17 | 2443690 | 1978-06-30 | 334.33 |
| 19 | 2444350 | 1980-04-20 | 334.61 |
| 20 | 2444685 | 1981-03-21 | 335 |
| 21 | 2445033 | 1982-03-04 | 333.71 |
| 22 | 2445355 | 1983-01-20 | 333.73 |
| 23 | 2445693 | 1983-12-24 | 334.67 |
| 24 | 2446022 | 1984-11-17 | 332.94 |
| 25 | 2446351 | 1985-10-12 | 332.63 |
| 26 | 2446695 | 1986-09-21 | 333.88 |
| 28 | 2447360 | 1988-07-17 | 334.31 |
| 29 | 2447685 | 1989-06-07 | 335.13 |
| 30 | 2448025 | 1990-05-13 | 334.88 |
| 31 | 2448365 | 1991-04-18 | 334.27 |
| 32 | 2448699 | 1992-03-17 | 335.36 |
| 33 | 2449036 | 1993-02-17 | 335.71 |
| 34 | 2449368 | 1994-01-15 | 334.07 |
| 35 | 2449701 | 1994-12-14 | 334.13 |
| 36 | 2450039 | 1995-11-17 | 334.41 |
| 37 | 2450371 | 1996-10-14 | 334.5 |
| 38 | 2450696 | 1997-09-04 | 335.56 |
| 40 | 2451380 | 1999-07-20 | 335.5 |
| 42 | 2452040 | 2001-05-10 | 334.78 |
| 43 | 2452385 | 2002-04-20 | 334.94 |
| 44 | 2452724 | 2003-03-25 | 334.59 |
| 45 | 2453055 | 2004-02-19 | 333.93 |
| 46 | 2453381 | 2005-01-10 | 333.21 |
| 47 | 2453715 | 2005-12-10 | 331.5 |
| 48 | 2454049 | 2006-11-09 | 331.14 |
| 49 | 2454380 | 2007-10-06 | 330.64 |
| 50 | 2454710 | 2008-08-31 | 330.29 |
| 51 | 2455040 | 2009-07-27 | 329.79 |
| 52 | 2455375 | 2010-06-27 | 328.57 |
| 53 | 2455690 | 2011-05-08 | 327.71 |
| 54 | 2456030 | 2012-04-12 | 327.43 |
| 55 | 2456351 | 2013-02-27 | 327.71 |
| 56 | 2456678 | 2014-01-20 | 328.86 |
| 57 | 2457000 | 2014-12-08 | 329.64 |
| 58 | 2457334 | 2015-11-07 | 328.93 |
| 59 | 2457669 | 2016-10-07 | 328.29 |
| 60 | 2458000 | 2017-09-03 | 329.36 |
| 61 | 2458335 | 2018-08-04 | 330.64 |
| 62 | 2458651 | 2019-06-16 | 330.05 |
| 63 | 2458974 | 2020-05-04 | 328.6 |
| 64 | 2459315 | 2021-04-10 | 326.5 |
| 65 | 2459648 | 2022-03-09 | 324.8 |
| 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. |