| E | O (JD) | O (dat) | Period |
| -89 | 2415143 | 1900-05-03 | 302.55 |
| -88 | 2415445 | 1901-03-01 | 302.61 |
| -84 | 2416650 | 1904-06-18 | 302.91 |
| -83 | 2416950 | 1905-04-14 | 303.16 |
| -80 | 2417865 | 1907-10-16 | 303.05 |
| -79 | 2418170 | 1908-08-16 | 303.1 |
| -78 | 2418470 | 1909-06-12 | 303.4 |
| -77 | 2418780 | 1910-04-18 | 303.56 |
| -74 | 2419690 | 1912-10-14 | 302.68 |
| -73 | 2419985 | 1913-08-05 | 301.64 |
| -72 | 2420293 | 1914-06-09 | 300.74 |
| -71 | 2420600 | 1915-04-12 | 300.4 |
| -70 | 2420895 | 1916-02-01 | 300.22 |
| -66 | 2422089 | 1919-05-10 | 299.68 |
| -63 | 2422991 | 1921-10-28 | 299.73 |
| -61 | 2423580 | 1923-06-09 | 299.58 |
| -60 | 2423890 | 1924-04-14 | 299.73 |
| -59 | 2424200 | 1925-02-18 | 300.12 |
| -56 | 2425080 | 1927-07-18 | 300.31 |
| -55 | 2425392 | 1928-05-25 | 300.29 |
| -54 | 2425690 | 1929-03-19 | 300.59 |
| -51 | 2426595 | 1931-09-10 | 300.73 |
| -50 | 2426897 | 1932-07-08 | 301.08 |
| -49 | 2427190 | 1933-04-27 | 301.79 |
| -48 | 2427490 | 1934-02-21 | 301.27 |
| -45 | 2428400 | 1936-08-19 | 300.85 |
| -44 | 2428710 | 1937-06-25 | 300.77 |
| -43 | 2429011 | 1938-04-22 | 300.6 |
| -42 | 2429310 | 1939-02-15 | 300.77 |
| -40 | 2429900 | 1940-09-27 | 300.26 |
| -39 | 2430191 | 1941-07-15 | 299.76 |
| -38 | 2430505 | 1942-05-25 | 300.07 |
| -37 | 2430800 | 1943-03-16 | 300.37 |
| -34 | 2431710 | 1945-09-11 | 300.3 |
| -33 | 2432000 | 1946-06-28 | 300.43 |
| -32 | 2432304 | 1947-04-28 | 298.96 |
| -29 | 2433215 | 1949-10-25 | 298.42 |
| -28 | 2433510 | 1950-08-16 | 298.08 |
| -27 | 2433796 | 1951-05-29 | 297.79 |
| -26 | 2434100 | 1952-03-28 | 297.97 |
| -20 | 2435864 | 1957-01-25 | 298.22 |
| -17 | 2436779 | 1959-07-29 | 298.18 |
| -16 | 2437070 | 1960-05-15 | 298.59 |
| -15 | 2437374 | 1961-03-15 | 299.19 |
| -14 | 2437681 | 1962-01-16 | 299.9 |
| -13 | 2437996 | 1962-11-27 | 301.91 |
| -12 | 2438278 | 1963-09-05 | 301.68 |
| -11 | 2438578 | 1964-07-01 | 302.31 |
| -10 | 2438882 | 1965-05-01 | 303.07 |
| -9 | 2439193 | 1966-03-08 | 302.93 |
| -8 | 2439489 | 1966-12-29 | 303.02 |
| -6 | 2440094 | 1968-08-25 | 303.42 |
| -5 | 2440404 | 1969-07-01 | 303.33 |
| -2 | 2441325 | 1972-01-08 | 302.96 |
| 0 | 2441916 | 1973-08-21 | 302.43 |
| 1 | 2442220 | 1974-06-21 | 301.87 |
| 2 | 2442521 | 1975-04-18 | 300.86 |
| 3 | 2442825 | 1976-02-16 | 299.95 |
| 5 | 2443425 | 1977-10-08 | 299.05 |
| 6 | 2443720 | 1978-07-30 | 299.08 |
| 7 | 2444011 | 1979-05-17 | 299.17 |
| 11 | 2445214 | 1982-09-01 | 299.21 |
| 12 | 2445512 | 1983-06-26 | 299.45 |
| 13 | 2445806 | 1984-04-15 | 299.91 |
| 14 | 2446110 | 1985-02-13 | 300.51 |
| 15 | 2446420 | 1985-12-20 | 301.03 |
| 16 | 2446715 | 1986-10-11 | 300.98 |
| 17 | 2447021 | 1987-08-13 | 300.87 |
| 18 | 2447321 | 1988-06-08 | 300.41 |
| 19 | 2447622 | 1989-04-05 | 299.76 |
| 20 | 2447920 | 1990-01-28 | 298.85 |
| 21 | 2448215 | 1990-11-19 | 298.99 |
| 22 | 2448516 | 1991-09-16 | 298.54 |
| 23 | 2448811 | 1992-07-07 | 298.62 |
| 24 | 2449114 | 1993-05-06 | 298.39 |
| 25 | 2449405 | 1994-02-21 | 298.67 |
| 26 | 2449715 | 1994-12-28 | 298.66 |
| 27 | 2450007 | 1995-10-16 | 298.29 |
| 28 | 2450310 | 1996-08-14 | 298.25 |
| 29 | 2450601 | 1997-06-01 | 298.17 |
| 30 | 2450907 | 1998-04-03 | 298.84 |
| 31 | 2451200 | 1999-01-21 | 299.12 |
| 32 | 2451494 | 1999-11-11 | 299.78 |
| 33 | 2451796 | 2000-09-08 | 300.6 |
| 34 | 2452097 | 2001-07-06 | 301.32 |
| 35 | 2452407 | 2002-05-12 | 301.85 |
| 36 | 2452708 | 2003-03-09 | 302.81 |
| 37 | 2453005 | 2003-12-31 | 303.18 |
| 38 | 2453316 | 2004-11-06 | 303.28 |
| 39 | 2453612 | 2005-08-29 | 303.66 |
| 40 | 2453919 | 2006-07-02 | 302.92 |
| 41 | 2454225 | 2007-05-04 | 302.79 |
| 42 | 2454524 | 2008-02-27 | 302.68 |
| 43 | 2454830 | 2008-12-29 | 302.16 |
| 44 | 2455141 | 2009-11-05 | 302.43 |
| 45 | 2455424 | 2010-08-15 | 302.57 |
| 46 | 2455731 | 2011-06-18 | 302.82 |
| 47 | 2456035 | 2012-04-17 | 303.52 |
| 48 | 2456335 | 2013-02-11 | 304.21 |
| 49 | 2456645 | 2013-12-18 | 304.64 |
| 50 | 2456953 | 2014-10-22 | 305.7 |
| 51 | 2457255 | 2015-08-20 | 305.03 |
| 52 | 2457565 | 2016-06-25 | 304.59 |
| 53 | 2457874 | 2017-04-30 | 303.92 |
| 54 | 2458171 | 2018-02-21 | 303.15 |
| 55 | 2458480 | 2018-12-27 | 302.69 |
| 56 | 2458770 | 2019-10-13 | 302.28 |
| 57 | 2459076 | 2020-08-14 | 301.45 |
| 58 | 2459375 | 2021-06-09 | 300.89 |
| 59 | 2459681 | 2022-04-11 | 301.17 |
| 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. |