| E | O (JD) | O (dat) | Period |
| -96 | 2415600 | 1901-08-03 | 300.12 |
| -92 | 2416800 | 1904-11-15 | 300.39 |
| -91 | 2417117 | 1905-09-28 | 300.47 |
| -90 | 2417434 | 1906-08-11 | 300.26 |
| -86 | 2418620 | 1909-11-09 | 300.22 |
| -81 | 2420100 | 1913-11-28 | 300.79 |
| -79 | 2420720 | 1915-08-10 | 301.15 |
| -77 | 2421320 | 1917-04-01 | 301.31 |
| -75 | 2421910 | 1918-11-12 | 301.77 |
| -72 | 2422815 | 1921-05-05 | 302.49 |
| -68 | 2424050 | 1924-09-21 | 303.01 |
| -67 | 2424360 | 1925-07-28 | 302.79 |
| -66 | 2424660 | 1926-05-24 | 302.76 |
| -65 | 2424965 | 1927-03-25 | 302.04 |
| -63 | 2425545 | 1928-10-25 | 300.01 |
| -62 | 2425850 | 1929-08-26 | 297.81 |
| -61 | 2426160 | 1930-07-02 | 296.97 |
| -59 | 2426755 | 1932-02-17 | 296.48 |
| -58 | 2427035 | 1932-11-23 | 296.13 |
| -56 | 2427626 | 1934-07-07 | 296.1 |
| -55 | 2427932 | 1935-05-09 | 295.53 |
| -54 | 2428220 | 1936-02-21 | 295.88 |
| -52 | 2428812 | 1937-10-05 | 296.9 |
| -51 | 2429109 | 1938-07-29 | 298 |
| -50 | 2429406 | 1939-05-22 | 299.14 |
| -49 | 2429700 | 1940-03-11 | 300.1 |
| -46 | 2430605 | 1942-09-02 | 301.46 |
| -45 | 2430910 | 1943-07-04 | 301.6 |
| -44 | 2431210 | 1944-04-29 | 301.57 |
| -40 | 2432419 | 1947-08-21 | 301.14 |
| -39 | 2432730 | 1948-06-27 | 300.52 |
| -38 | 2433045 | 1949-05-08 | 300.09 |
| -35 | 2433920 | 1951-09-30 | 299.94 |
| -34 | 2434221 | 1952-07-27 | 299.88 |
| -28 | 2436019 | 1957-06-29 | 299.75 |
| -22 | 2437813 | 1962-05-28 | 299.71 |
| -21 | 2438115 | 1963-03-26 | 299.75 |
| -20 | 2438423 | 1964-01-28 | 299.94 |
| -18 | 2439028 | 1965-09-24 | 299.74 |
| -17 | 2439330 | 1966-07-23 | 299.72 |
| -16 | 2439628 | 1967-05-17 | 299.49 |
| -8 | 2442020 | 1973-12-03 | 299.12 |
| -7 | 2442309 | 1974-09-18 | 298.92 |
| -6 | 2442609 | 1975-07-15 | 298.81 |
| -5 | 2442920 | 1976-05-21 | 299.12 |
| -4 | 2443210 | 1977-03-07 | 300.07 |
| -3 | 2443505 | 1977-12-27 | 301.71 |
| -2 | 2443815 | 1978-11-02 | 302.2 |
| -1 | 2444113 | 1979-08-27 | 302.41 |
| 0 | 2444425 | 1980-07-04 | 302.58 |
| 1 | 2444740 | 1981-05-15 | 303.28 |
| 2 | 2445025 | 1982-02-24 | 303.75 |
| 3 | 2445325 | 1982-12-21 | 303.46 |
| 4 | 2445633 | 1983-10-25 | 303.28 |
| 5 | 2445937 | 1984-08-24 | 302.52 |
| 6 | 2446241 | 1985-06-24 | 302.47 |
| 7 | 2446552 | 1986-05-01 | 302.44 |
| 8 | 2446850 | 1987-02-23 | 301.68 |
| 10 | 2447453 | 1988-10-18 | 300.79 |
| 11 | 2447748 | 1989-08-09 | 300.34 |
| 12 | 2448056 | 1990-06-13 | 300.34 |
| 13 | 2448345 | 1991-03-29 | 300.16 |
| 15 | 2448947 | 1992-11-20 | 299.95 |
| 16 | 2449244 | 1993-09-13 | 300.1 |
| 17 | 2449549 | 1994-07-15 | 300.14 |
| 18 | 2449860 | 1995-05-22 | 300.13 |
| 19 | 2450155 | 1996-03-12 | 300.54 |
| 20 | 2450443 | 1996-12-25 | 299.92 |
| 21 | 2450754 | 1997-11-01 | 299.65 |
| 22 | 2451048 | 1998-08-22 | 298.95 |
| 23 | 2451352 | 1999-06-22 | 298.24 |
| 24 | 2451652 | 2000-04-17 | 298.3 |
| 25 | 2451942 | 2001-02-01 | 298.69 |
| 26 | 2452247 | 2001-12-03 | 298.19 |
| 27 | 2452541 | 2002-09-23 | 298.02 |
| 28 | 2452834 | 2003-07-13 | 297.52 |
| 29 | 2453135 | 2004-05-09 | 297.5 |
| 31 | 2453741 | 2006-01-05 | 297.36 |
| 32 | 2454033 | 2006-10-24 | 296.95 |
| 33 | 2454326 | 2007-08-13 | 297.2 |
| 34 | 2454619 | 2008-06-01 | 297.68 |
| 35 | 2454921 | 2009-03-30 | 297.72 |
| 36 | 2455212 | 2010-01-15 | 298.24 |
| 37 | 2455510 | 2010-11-09 | 299.5 |
| 38 | 2455815 | 2011-09-10 | 300.33 |
| 39 | 2456122 | 2012-07-13 | 300.77 |
| 40 | 2456416 | 2013-05-03 | 300.75 |
| 41 | 2456722 | 2014-03-05 | 301.49 |
| 42 | 2457026 | 2015-01-03 | 301.38 |
| 43 | 2457323 | 2015-10-27 | 300.91 |
| 44 | 2457621 | 2016-08-20 | 300.44 |
| 45 | 2457918 | 2017-06-13 | 300.47 |
| 47 | 2458533 | 2019-02-18 | 300.21 |
| 48 | 2458828 | 2019-12-10 | 300.14 |
| 49 | 2459124 | 2020-10-01 | 300.36 |
| 50 | 2459420 | 2021-07-24 | 300.41 |
| 51 | 2459725 | 2022-05-25 | 300.11 |
| 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. |