| E | O (JD) | O (dat) | Period |
| -91 | 2411559 | 1890-07-10 | 338.72 |
| -90 | 2411890 | 1891-06-06 | 337.26 |
| -89 | 2412252 | 1892-06-02 | 335.12 |
| -88 | 2412584 | 1893-04-30 | 337 |
| -87 | 2412918 | 1894-03-30 | 339.57 |
| -86 | 2413248 | 1895-02-23 | 339.72 |
| -85 | 2413579 | 1896-01-20 | 337.51 |
| -84 | 2413927 | 1897-01-02 | 335.64 |
| -83 | 2414276 | 1897-12-17 | 336.39 |
| -82 | 2414622 | 1898-11-28 | 337 |
| -81 | 2414939 | 1899-10-11 | 336.01 |
| -80 | 2415262 | 1900-08-30 | 335.57 |
| -78 | 2415950 | 1902-07-19 | 333.94 |
| -77 | 2416269 | 1903-06-03 | 333.59 |
| -76 | 2416613 | 1904-05-12 | 335.67 |
| -75 | 2416959 | 1905-04-23 | 335.59 |
| -74 | 2417282 | 1906-03-12 | 334.31 |
| -72 | 2417950 | 1908-01-09 | 333.87 |
| -71 | 2418293 | 1908-12-17 | 331.64 |
| -70 | 2418624 | 1909-11-13 | 331.26 |
| -69 | 2418944 | 1910-09-29 | 332.52 |
| -68 | 2419280 | 1911-08-31 | 331.72 |
| -66 | 2419930 | 1913-06-11 | 330.45 |
| -64 | 2420605 | 1915-04-17 | 332.06 |
| -63 | 2420945 | 1916-03-22 | 333.67 |
| -62 | 2421269 | 1917-02-09 | 334.35 |
| -61 | 2421596 | 1918-01-02 | 334.93 |
| -60 | 2421949 | 1918-12-21 | 335.15 |
| -59 | 2422281 | 1919-11-18 | 336.93 |
| -58 | 2422613 | 1920-10-15 | 339.21 |
| -57 | 2422946 | 1921-09-13 | 339.35 |
| -56 | 2423296 | 1922-08-29 | 338.79 |
| -55 | 2423635 | 1923-08-03 | 339.87 |
| -54 | 2423979 | 1924-07-12 | 339.72 |
| -53 | 2424317 | 1925-06-15 | 337.42 |
| -52 | 2424656 | 1926-05-20 | 334.78 |
| -51 | 2424996 | 1927-04-25 | 332.72 |
| -50 | 2425319 | 1928-03-13 | 331.51 |
| -49 | 2425647 | 1929-02-04 | 331.14 |
| -48 | 2425971 | 1929-12-25 | 329.78 |
| -47 | 2426301 | 1930-11-20 | 329.21 |
| -46 | 2426636 | 1931-10-21 | 329.72 |
| -45 | 2426973 | 1932-09-22 | 330.29 |
| -44 | 2427296 | 1933-08-11 | 330.64 |
| -43 | 2427628 | 1934-07-09 | 330.49 |
| -42 | 2427954 | 1935-05-31 | 331.14 |
| -41 | 2428288 | 1936-04-29 | 331.93 |
| -40 | 2428613 | 1937-03-20 | 332.37 |
| -39 | 2428951 | 1938-02-21 | 332.79 |
| -38 | 2429294 | 1939-01-30 | 333.57 |
| -37 | 2429622 | 1939-12-24 | 333.49 |
| -36 | 2429955 | 1940-11-21 | 333.72 |
| -35 | 2430286 | 1941-10-18 | 334.22 |
| -34 | 2430626 | 1942-09-23 | 334.29 |
| -33 | 2430944 | 1943-08-07 | 334.14 |
| -32 | 2431292 | 1944-07-20 | 333.78 |
| -31 | 2431632 | 1945-06-25 | 333.64 |
| -30 | 2431964 | 1946-05-23 | 334.58 |
| -29 | 2432291 | 1947-04-15 | 334.79 |
| -28 | 2432623 | 1948-03-12 | 333.42 |
| -27 | 2432960 | 1949-02-12 | 333.42 |
| -26 | 2433294 | 1950-01-12 | 334.29 |
| -25 | 2433629 | 1950-12-13 | 335.29 |
| -24 | 2433963 | 1951-11-12 | 335.5 |
| -23 | 2434301 | 1952-10-15 | 335.57 |
| -22 | 2434634 | 1953-09-13 | 336.85 |
| -21 | 2434974 | 1954-08-19 | 336.57 |
| -20 | 2435306 | 1955-07-17 | 336.51 |
| -19 | 2435646 | 1956-06-21 | 337.64 |
| -18 | 2435993 | 1957-06-03 | 336.99 |
| -17 | 2436311 | 1958-04-17 | 337.07 |
| -16 | 2436664 | 1959-04-05 | 337.36 |
| -15 | 2436998 | 1960-03-04 | 335.65 |
| -14 | 2437328 | 1961-01-28 | 335.43 |
| -13 | 2437671 | 1962-01-06 | 334.78 |
| -12 | 2438004 | 1962-12-05 | 332.64 |
| -11 | 2438334 | 1963-10-31 | 332.36 |
| -10 | 2438666 | 1964-09-27 | 332.15 |
| -9 | 2438996 | 1965-08-23 | 331.43 |
| -8 | 2439323 | 1966-07-16 | 331.14 |
| -7 | 2439656 | 1967-06-14 | 331.57 |
| -6 | 2439993 | 1968-05-16 | 332 |
| -5 | 2440322 | 1969-04-10 | 332.79 |
| -4 | 2440652 | 1970-03-06 | 333.5 |
| -3 | 2440990 | 1971-02-07 | 334.21 |
| -2 | 2441320 | 1972-01-03 | 334.99 |
| -1 | 2441658 | 1972-12-06 | 335.43 |
| 0 | 2441990 | 1973-11-03 | 335.94 |
| 1 | 2442338 | 1974-10-17 | 335.64 |
| 2 | 2442667 | 1975-09-11 | 334.85 |
| 3 | 2443003 | 1976-08-12 | 334.92 |
| 4 | 2443342 | 1977-07-17 | 334.5 |
| 5 | 2443667 | 1978-06-07 | 333.94 |
| 6 | 2443999 | 1979-05-05 | 333.72 |
| 7 | 2444338 | 1980-04-08 | 332.21 |
| 8 | 2444673 | 1981-03-09 | 332.57 |
| 9 | 2445007 | 1982-02-06 | 333.43 |
| 10 | 2445335 | 1982-12-31 | 332.94 |
| 11 | 2445661 | 1983-11-22 | 333.86 |
| 12 | 2446004 | 1984-10-30 | 333.78 |
| 13 | 2446330 | 1985-09-21 | 333.71 |
| 14 | 2446668 | 1986-08-25 | 334 |
| 15 | 2447017 | 1987-08-09 | 333.44 |
| 16 | 2447336 | 1988-06-23 | 333.07 |
| 17 | 2447678 | 1989-05-31 | 333.07 |
| 18 | 2447994 | 1990-04-12 | 331.71 |
| 19 | 2448339 | 1991-03-23 | 330.36 |
| 20 | 2448658 | 1992-02-05 | 330.01 |
| 21 | 2449003 | 1993-01-15 | 330.43 |
| 22 | 2449326 | 1993-12-04 | 329.92 |
| 23 | 2449652 | 1994-10-26 | 329.28 |
| 24 | 2449982 | 1995-09-21 | 329.72 |
| 25 | 2450316 | 1996-08-20 | 329.15 |
| 26 | 2450636 | 1997-07-06 | 329.72 |
| 27 | 2450971 | 1998-06-06 | 330.42 |
| 28 | 2451306 | 1999-05-07 | 331.14 |
| 29 | 2451631 | 2000-03-27 | 333.07 |
| 30 | 2451963 | 2001-02-22 | 334.29 |
| 31 | 2452297 | 2002-01-22 | 334.29 |
| 32 | 2452637 | 2002-12-28 | 335.64 |
| 33 | 2452978 | 2003-12-04 | 337.21 |
| 34 | 2453309 | 2004-10-30 | 338.57 |
| 35 | 2453648 | 2005-10-04 | 338.29 |
| 36 | 2453988 | 2006-09-09 | 336.86 |
| 37 | 2454327 | 2007-08-14 | 337.07 |
| 38 | 2454673 | 2008-07-25 | 336.99 |
| 39 | 2454997 | 2009-06-14 | 336.29 |
| 40 | 2455334 | 2010-05-17 | 336.22 |
| 41 | 2455672 | 2011-04-20 | 335.93 |
| 42 | 2456003 | 2012-03-16 | 336.21 |
| 43 | 2456341 | 2013-02-17 | 336.64 |
| 44 | 2456681 | 2014-01-23 | 336.14 |
| 45 | 2457022 | 2014-12-30 | 336.58 |
| 46 | 2457355 | 2015-11-28 | 337.79 |
| 47 | 2457689 | 2016-10-27 | 338.21 |
| 48 | 2458023 | 2017-09-26 | 337.28 |
| 49 | 2458364 | 2018-09-02 | 336.29 |
| 50 | 2458709 | 2019-08-13 | 336.72 |
| 51 | 2459048 | 2020-07-17 | 338.63 |
| 52 | 2459377 | 2021-06-11 | 338.99 |
| 53 | 2459708 | 2022-05-08 | 338.59 |
| 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. |