| E | O (JD) | O (dat) | Period |
| -100 | 2410742 | 1888-04-14 | 334.74 |
| -97 | 2411735 | 1891-01-02 | 333.35 |
| -96 | 2412073 | 1891-12-06 | 332.03 |
| -95 | 2412401 | 1892-10-29 | 335.01 |
| -94 | 2412742 | 1893-10-05 | 334.75 |
| -93 | 2413067 | 1894-08-26 | 332.43 |
| -92 | 2413400 | 1895-07-25 | 331.64 |
| -91 | 2413768 | 1896-07-27 | 329.07 |
| -90 | 2414065 | 1897-05-20 | 328.29 |
| -89 | 2414397 | 1898-04-17 | 328.99 |
| -88 | 2414720 | 1899-03-06 | 324.35 |
| -87 | 2415030 | 1900-01-10 | 323.29 |
| -86 | 2415375 | 1900-12-21 | 325.57 |
| -85 | 2415698 | 1901-11-09 | 323.43 |
| -84 | 2416011 | 1902-09-18 | 322.14 |
| -83 | 2416348 | 1903-08-21 | 321.72 |
| -82 | 2416672 | 1904-07-10 | 320.22 |
| -81 | 2416973 | 1905-05-07 | 321 |
| -80 | 2417287 | 1906-03-17 | 322.79 |
| -79 | 2417622 | 1907-02-15 | 322.42 |
| -78 | 2417934 | 1907-12-24 | 324.49 |
| -77 | 2418269 | 1908-11-23 | 327.86 |
| -76 | 2418609 | 1909-10-29 | 327.64 |
| -75 | 2418925 | 1910-09-10 | 327.57 |
| -74 | 2419263 | 1911-08-14 | 327.79 |
| -73 | 2419587 | 1912-07-03 | 326.14 |
| -72 | 2419909 | 1913-05-21 | 324.86 |
| -71 | 2420233 | 1914-04-10 | 324.29 |
| -70 | 2420559 | 1915-03-02 | 324.07 |
| -69 | 2420885 | 1916-01-22 | 324.43 |
| -68 | 2421197 | 1916-11-29 | 324.57 |
| -67 | 2421531 | 1917-10-29 | 324.43 |
| -66 | 2421856 | 1918-09-19 | 324.64 |
| -65 | 2422182 | 1919-08-11 | 326.64 |
| -64 | 2422504 | 1920-06-28 | 328.07 |
| -63 | 2422830 | 1921-05-20 | 327.43 |
| -62 | 2423159 | 1922-04-14 | 325.99 |
| -61 | 2423496 | 1923-03-17 | 325.21 |
| -60 | 2423825 | 1924-02-09 | 324.57 |
| -59 | 2424146 | 1924-12-26 | 323.85 |
| -58 | 2424456 | 1925-11-01 | 323.64 |
| -57 | 2424783 | 1926-09-24 | 324.14 |
| -56 | 2425095 | 1927-08-02 | 325.36 |
| -55 | 2425428 | 1928-06-30 | 326.64 |
| -54 | 2425758 | 1929-05-26 | 327.93 |
| -53 | 2426101 | 1930-05-04 | 328.93 |
| -52 | 2426425 | 1931-03-24 | 329.93 |
| -51 | 2426750 | 1932-02-12 | 330.14 |
| -50 | 2427080 | 1933-01-07 | 329.29 |
| -49 | 2427403 | 1933-11-26 | 328.72 |
| -48 | 2427739 | 1934-10-28 | 329.86 |
| -47 | 2428069 | 1935-09-23 | 332.07 |
| -46 | 2428400 | 1936-08-19 | 333.79 |
| -45 | 2428728 | 1937-07-13 | 333.86 |
| -44 | 2429065 | 1938-06-15 | 334.79 |
| -43 | 2429414 | 1939-05-30 | 336.14 |
| -42 | 2429742 | 1940-04-22 | 337.35 |
| -41 | 2430074 | 1941-03-20 | 337.64 |
| -40 | 2430421 | 1942-03-02 | 335.5 |
| -39 | 2430754 | 1943-01-29 | 334.28 |
| -38 | 2431097 | 1944-01-07 | 334.49 |
| -37 | 2431423 | 1944-11-28 | 333.14 |
| -36 | 2431753 | 1945-10-24 | 331.57 |
| -35 | 2432083 | 1946-09-19 | 331.5 |
| -34 | 2432416 | 1947-08-18 | 332 |
| -33 | 2432743 | 1948-07-10 | 331.64 |
| -32 | 2433074 | 1949-06-06 | 330.86 |
| -31 | 2433418 | 1950-05-16 | 329.57 |
| -30 | 2433750 | 1951-04-13 | 327.79 |
| -29 | 2434069 | 1952-02-26 | 328.36 |
| -28 | 2434399 | 1953-01-21 | 327.86 |
| -27 | 2434714 | 1953-12-02 | 325.86 |
| -26 | 2435034 | 1954-10-18 | 325.93 |
| -25 | 2435380 | 1955-09-29 | 325.72 |
| -24 | 2435702 | 1956-08-16 | 326.72 |
| -23 | 2436028 | 1957-07-08 | 328.72 |
| -22 | 2436354 | 1958-05-30 | 326.85 |
| -21 | 2436674 | 1959-04-15 | 325.64 |
| -20 | 2437013 | 1960-03-19 | 327.36 |
| -19 | 2437337 | 1961-02-06 | 328.22 |
| -18 | 2437653 | 1961-12-19 | 329.93 |
| -17 | 2437988 | 1962-11-19 | 330.29 |
| -16 | 2438325 | 1963-10-22 | 329.5 |
| -15 | 2438652 | 1964-09-13 | 330.36 |
| -14 | 2438995 | 1965-08-22 | 330.07 |
| -13 | 2439316 | 1966-07-09 | 329 |
| -12 | 2439647 | 1967-06-05 | 328.71 |
| -11 | 2439968 | 1968-04-21 | 327.78 |
| -10 | 2440294 | 1969-03-13 | 328.22 |
| -9 | 2440625 | 1970-02-07 | 329.35 |
| -8 | 2440954 | 1971-01-02 | 329.14 |
| -7 | 2441282 | 1971-11-26 | 329.72 |
| -6 | 2441624 | 1972-11-02 | 330 |
| -5 | 2441950 | 1973-09-24 | 329.5 |
| -4 | 2442273 | 1974-08-13 | 329.07 |
| -3 | 2442605 | 1975-07-11 | 328.07 |
| -2 | 2442934 | 1976-06-04 | 327.22 |
| -1 | 2443258 | 1977-04-24 | 328.29 |
| 0 | 2443585 | 1978-03-17 | 328.43 |
| 1 | 2443914 | 1979-02-09 | 327.29 |
| 2 | 2444241 | 1980-01-02 | 327.5 |
| 3 | 2444578 | 1980-12-04 | 327.5 |
| 4 | 2444898 | 1981-10-20 | 326.5 |
| 5 | 2445223 | 1982-09-10 | 326.36 |
| 6 | 2445554 | 1983-08-07 | 325.64 |
| 7 | 2445874 | 1984-06-22 | 324.43 |
| 8 | 2446196 | 1985-05-10 | 323.64 |
| 9 | 2446528 | 1986-04-07 | 323.21 |
| 10 | 2446850 | 1987-02-23 | 323.86 |
| 11 | 2447168 | 1988-01-07 | 325.14 |
| 12 | 2447484 | 1988-11-18 | 326.42 |
| 13 | 2447818 | 1989-10-18 | 327.5 |
| 14 | 2448144 | 1990-09-09 | 329.07 |
| 15 | 2448478 | 1991-08-09 | 331.43 |
| 16 | 2448816 | 1992-07-12 | 332 |
| 17 | 2449147 | 1993-06-08 | 331.07 |
| 18 | 2449478 | 1994-05-05 | 330.79 |
| 19 | 2449814 | 1995-04-06 | 329.93 |
| 20 | 2450136 | 1996-02-22 | 328.72 |
| 21 | 2450461 | 1997-01-12 | 328.57 |
| 22 | 2450792 | 1997-12-09 | 328.49 |
| 23 | 2451121 | 1998-11-03 | 329 |
| 24 | 2451444 | 1999-09-22 | 330 |
| 25 | 2451781 | 2000-08-24 | 330.5 |
| 26 | 2452110 | 2001-07-19 | 331.57 |
| 27 | 2452446 | 2002-06-20 | 332.29 |
| 28 | 2452771 | 2003-05-11 | 332.07 |
| 29 | 2453109 | 2004-04-13 | 331.72 |
| 30 | 2453446 | 2005-03-16 | 331.5 |
| 31 | 2453771 | 2006-02-04 | 331.5 |
| 32 | 2454103 | 2007-01-02 | 331.43 |
| 33 | 2454432 | 2007-11-27 | 330.5 |
| 34 | 2454765 | 2008-10-25 | 329.57 |
| 35 | 2455093 | 2009-09-18 | 329.5 |
| 36 | 2455427 | 2010-08-18 | 329.86 |
| 37 | 2455755 | 2011-07-12 | 329.36 |
| 38 | 2456076 | 2012-05-28 | 329.21 |
| 39 | 2456411 | 2013-04-28 | 329.28 |
| 40 | 2456742 | 2014-03-25 | 328.72 |
| 41 | 2457066 | 2015-02-12 | 328.78 |
| 42 | 2457401 | 2016-01-13 | 328.57 |
| 43 | 2457729 | 2016-12-06 | 327.29 |
| 44 | 2458055 | 2017-10-28 | 326.64 |
| 45 | 2458379 | 2018-09-17 | 327.14 |
| 46 | 2458708 | 2019-08-12 | 326.89 |
| 47 | 2459027 | 2020-06-26 | 325.77 |
| 48 | 2459354 | 2021-05-19 | 326.17 |
| 49 | 2459693 | 2022-04-23 | 326.62 |
| 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. |