| E | O (JD) | O (dat) | Period |
| -85 | 2415380 | 1900-12-26 | 353.54 |
| -83 | 2416090 | 1902-12-06 | 352.53 |
| -82 | 2416421 | 1903-11-02 | 350.13 |
| -81 | 2416770 | 1904-10-16 | 349.53 |
| -79 | 2417491 | 1906-10-07 | 349.65 |
| -78 | 2417836 | 1907-09-17 | 351.74 |
| -77 | 2418176 | 1908-08-22 | 355 |
| -76 | 2418529 | 1909-08-10 | 353.14 |
| -75 | 2418885 | 1910-08-01 | 351.43 |
| -74 | 2419254 | 1911-08-05 | 353.14 |
| -73 | 2419617 | 1912-08-02 | 352.86 |
| -72 | 2419941 | 1913-06-22 | 352.22 |
| -71 | 2420306 | 1914-06-22 | 350.4 |
| -70 | 2420650 | 1915-06-01 | 347.76 |
| -69 | 2420995 | 1916-05-11 | 347.31 |
| -68 | 2421350 | 1917-05-01 | 345.85 |
| -66 | 2422045 | 1919-03-27 | 344.83 |
| -65 | 2422390 | 1920-03-06 | 345.58 |
| -64 | 2422725 | 1921-02-04 | 345.6 |
| -59 | 2424439 | 1925-10-15 | 345.12 |
| -58 | 2424793 | 1926-10-04 | 344.62 |
| -57 | 2425146 | 1927-09-22 | 344.38 |
| -55 | 2425839 | 1929-08-15 | 344.7 |
| -54 | 2426184 | 1930-07-26 | 344.75 |
| -53 | 2426522 | 1931-06-29 | 342.76 |
| -52 | 2426858 | 1932-05-30 | 342 |
| -51 | 2427200 | 1933-05-07 | 345.14 |
| -50 | 2427548 | 1934-04-20 | 348.56 |
| -49 | 2427875 | 1935-03-13 | 350.42 |
| -48 | 2428240 | 1936-03-12 | 351.62 |
| -46 | 2428960 | 1938-03-02 | 352.56 |
| -38 | 2431763 | 1945-11-03 | 353.81 |
| -36 | 2432480 | 1947-10-21 | 353.75 |
| -35 | 2432830 | 1948-10-05 | 352.58 |
| -34 | 2433200 | 1949-10-10 | 354.15 |
| -33 | 2433545 | 1950-09-20 | 355.96 |
| -32 | 2433890 | 1951-08-31 | 355.52 |
| -31 | 2434240 | 1952-08-15 | 355.04 |
| -26 | 2436045 | 1957-07-25 | 354.77 |
| -25 | 2436385 | 1958-06-30 | 355.5 |
| -23 | 2437102 | 1960-06-16 | 355.35 |
| -21 | 2437804 | 1962-05-19 | 352.68 |
| -20 | 2438165 | 1963-05-15 | 349.43 |
| -19 | 2438513 | 1964-04-27 | 349.05 |
| -18 | 2438856 | 1965-04-05 | 347.76 |
| -17 | 2439188 | 1966-03-03 | 345.9 |
| -13 | 2440580 | 1969-12-24 | 344.9 |
| -12 | 2440935 | 1970-12-14 | 344.9 |
| -11 | 2441274 | 1971-11-18 | 345.35 |
| -10 | 2441613 | 1972-10-22 | 345.82 |
| -9 | 2441963 | 1973-10-07 | 345.21 |
| -8 | 2442304 | 1974-09-13 | 344.92 |
| -7 | 2442647 | 1975-08-22 | 346.07 |
| -6 | 2443000 | 1976-08-09 | 346.14 |
| -5 | 2443348 | 1977-07-23 | 346.07 |
| -4 | 2443690 | 1978-06-30 | 348.36 |
| -3 | 2444042 | 1979-06-17 | 349 |
| -2 | 2444380 | 1980-05-20 | 348.22 |
| -1 | 2444732 | 1981-05-07 | 349.14 |
| 0 | 2445096 | 1982-05-06 | 349.07 |
| 1 | 2445437 | 1983-04-12 | 349.64 |
| 2 | 2445786 | 1984-03-26 | 351.29 |
| 3 | 2446140 | 1985-03-15 | 351.93 |
| 4 | 2446479 | 1986-02-17 | 353.86 |
| 5 | 2446838 | 1987-02-11 | 356 |
| 6 | 2447192 | 1988-01-31 | 356.29 |
| 7 | 2447563 | 1989-02-05 | 356.93 |
| 8 | 2447924 | 1990-02-01 | 358.21 |
| 9 | 2448283 | 1991-01-26 | 358.92 |
| 10 | 2448631 | 1992-01-09 | 358.14 |
| 11 | 2448985 | 1992-12-28 | 355.42 |
| 12 | 2449347 | 1993-12-25 | 353.71 |
| 13 | 2449708 | 1994-12-21 | 353.86 |
| 14 | 2450061 | 1995-12-09 | 353.72 |
| 15 | 2450402 | 1996-11-14 | 352.43 |
| 16 | 2450757 | 1997-11-04 | 351.22 |
| 17 | 2451111 | 1998-10-24 | 350.22 |
| 18 | 2451457 | 1999-10-05 | 350 |
| 19 | 2451809 | 2000-09-21 | 350.14 |
| 20 | 2452163 | 2001-09-10 | 349.79 |
| 21 | 2452509 | 2002-08-22 | 350.07 |
| 22 | 2452854 | 2003-08-02 | 349.86 |
| 23 | 2453207 | 2004-07-20 | 348.29 |
| 24 | 2453558 | 2005-07-06 | 347.36 |
| 25 | 2453911 | 2006-06-24 | 347.93 |
| 26 | 2454253 | 2007-06-01 | 348.64 |
| 27 | 2454595 | 2008-05-08 | 348.22 |
| 28 | 2454940 | 2009-04-18 | 346.49 |
| 29 | 2455294 | 2010-04-07 | 346.49 |
| 30 | 2455648 | 2011-03-27 | 348.43 |
| 31 | 2455992 | 2012-03-05 | 349.36 |
| 32 | 2456328 | 2013-02-04 | 348.86 |
| 33 | 2456687 | 2014-01-29 | 347.36 |
| 34 | 2457039 | 2015-01-16 | 347.29 |
| 35 | 2457387 | 2015-12-30 | 348.79 |
| 36 | 2457731 | 2016-12-08 | 349.07 |
| 37 | 2458074 | 2017-11-16 | 348.64 |
| 38 | 2458428 | 2018-11-05 | 348.85 |
| 39 | 2458775 | 2019-10-18 | 348.98 |
| 40 | 2459127 | 2020-10-04 | 350.14 |
| 41 | 2459480 | 2021-09-22 | 350.66 |
| 42 | 2459830 | 2022-09-07 | 349.98 |
| 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. |