| E | O (JD) | O (dat) | Period |
| -88 | 2409606 | 1885-03-05 | 386.89 |
| -87 | 2409980 | 1886-03-14 | 385.72 |
| -86 | 2410355 | 1887-03-24 | 384.85 |
| -82 | 2411919 | 1891-07-05 | 386.51 |
| -74 | 2415011 | 1899-12-22 | 386.82 |
| -73 | 2415369 | 1900-12-15 | 387.09 |
| -72 | 2415769 | 1902-01-19 | 387.23 |
| -71 | 2416184 | 1903-03-10 | 387.81 |
| -70 | 2416554 | 1904-03-14 | 390.36 |
| -69 | 2416942 | 1905-04-06 | 388.79 |
| -68 | 2417336 | 1906-05-05 | 384.14 |
| -67 | 2417738 | 1907-06-11 | 384.57 |
| -66 | 2418107 | 1908-06-14 | 385.36 |
| -65 | 2418474 | 1909-06-16 | 382.8 |
| -64 | 2418857 | 1910-07-04 | 382.31 |
| -63 | 2419265 | 1911-08-16 | 383.5 |
| -62 | 2419626 | 1912-08-11 | 384.62 |
| -60 | 2420394 | 1914-09-18 | 385.25 |
| -59 | 2420797 | 1915-10-26 | 385.13 |
| -58 | 2421184 | 1916-11-16 | 385.69 |
| -57 | 2421551 | 1917-11-18 | 386.6 |
| -56 | 2421944 | 1918-12-16 | 384.79 |
| -55 | 2422340 | 1920-01-16 | 383.43 |
| -54 | 2422722 | 1921-02-01 | 385.14 |
| -53 | 2423097 | 1922-02-11 | 386.64 |
| -52 | 2423481 | 1923-03-02 | 386.14 |
| -51 | 2423868 | 1924-03-23 | 386.64 |
| -50 | 2424259 | 1925-04-18 | 387.43 |
| -49 | 2424649 | 1926-05-13 | 387.36 |
| -48 | 2425041 | 1927-06-09 | 388.36 |
| -47 | 2425434 | 1928-07-06 | 388.86 |
| -46 | 2425809 | 1929-07-16 | 387.64 |
| -45 | 2426192 | 1930-08-03 | 387.21 |
| -44 | 2426594 | 1931-09-09 | 386.21 |
| -43 | 2426977 | 1932-09-26 | 384.93 |
| -42 | 2427358 | 1933-10-12 | 385.93 |
| -41 | 2427753 | 1934-11-11 | 385.36 |
| -40 | 2428129 | 1935-11-22 | 384.21 |
| -39 | 2428503 | 1936-11-30 | 385 |
| -38 | 2428901 | 1938-01-02 | 383.86 |
| -37 | 2429280 | 1939-01-16 | 382.43 |
| -36 | 2429670 | 1940-02-10 | 383.43 |
| -35 | 2430055 | 1941-03-01 | 383.5 |
| -34 | 2430430 | 1942-03-11 | 382.43 |
| -33 | 2430806 | 1943-03-22 | 381.64 |
| -32 | 2431194 | 1944-04-13 | 381 |
| -31 | 2431579 | 1945-05-03 | 381.79 |
| -30 | 2431956 | 1946-05-15 | 382.57 |
| -29 | 2432337 | 1947-05-31 | 383.07 |
| -28 | 2432722 | 1948-06-19 | 383.64 |
| -27 | 2433108 | 1949-07-10 | 384.5 |
| -26 | 2433484 | 1950-07-21 | 387.14 |
| -25 | 2433879 | 1951-08-20 | 389.5 |
| -24 | 2434265 | 1952-09-09 | 390.5 |
| -23 | 2434653 | 1953-10-02 | 391.71 |
| -22 | 2435060 | 1954-11-13 | 391.36 |
| -21 | 2435452 | 1955-12-10 | 390.57 |
| -20 | 2435845 | 1957-01-06 | 390.86 |
| -19 | 2436231 | 1958-01-27 | 388.71 |
| -18 | 2436611 | 1959-02-11 | 385.79 |
| -17 | 2437001 | 1960-03-07 | 384.86 |
| -16 | 2437389 | 1961-03-30 | 386.5 |
| -15 | 2437766 | 1962-04-11 | 387.42 |
| -14 | 2438147 | 1963-04-27 | 386.28 |
| -13 | 2438538 | 1964-05-22 | 385.92 |
| -12 | 2438949 | 1965-07-07 | 386.49 |
| -11 | 2439317 | 1966-07-10 | 387.71 |
| -10 | 2439703 | 1967-07-31 | 389.78 |
| -9 | 2440090 | 1968-08-21 | 389.93 |
| -8 | 2440476 | 1969-09-11 | 390.22 |
| -7 | 2440865 | 1970-10-05 | 392.72 |
| -6 | 2441277 | 1971-11-21 | 393.51 |
| -5 | 2441669 | 1972-12-17 | 393.94 |
| -4 | 2442060 | 1974-01-12 | 394.65 |
| -3 | 2442458 | 1975-02-14 | 393.14 |
| -2 | 2442844 | 1976-03-06 | 391.14 |
| -1 | 2443237 | 1977-04-03 | 390.64 |
| 0 | 2443629 | 1978-04-30 | 390.56 |
| 1 | 2444017 | 1979-05-23 | 389.71 |
| 2 | 2444405 | 1980-06-14 | 388.49 |
| 3 | 2444793 | 1981-07-07 | 388.71 |
| 4 | 2445193 | 1982-08-11 | 389.29 |
| 5 | 2445565 | 1983-08-18 | 390.5 |
| 6 | 2445955 | 1984-09-11 | 391.64 |
| 7 | 2446353 | 1985-10-14 | 391.36 |
| 8 | 2446743 | 1986-11-08 | 391.93 |
| 9 | 2447146 | 1987-12-16 | 392.36 |
| 10 | 2447535 | 1989-01-08 | 391.5 |
| 11 | 2447930 | 1990-02-07 | 392 |
| 12 | 2448315 | 1991-02-27 | 391.5 |
| 13 | 2448698 | 1992-03-16 | 390.43 |
| 14 | 2449091 | 1993-04-13 | 390 |
| 15 | 2449493 | 1994-05-20 | 388.57 |
| 16 | 2449877 | 1995-06-08 | 387.36 |
| 17 | 2450270 | 1996-07-05 | 384.07 |
| 18 | 2450655 | 1997-07-25 | 383.57 |
| 19 | 2451030 | 1998-08-04 | 386.29 |
| 20 | 2451406 | 1999-08-15 | 386.57 |
| 21 | 2451760 | 2000-08-03 | 384.36 |
| 22 | 2452194 | 2001-10-11 | 382.43 |
| 23 | 2452584 | 2002-11-05 | 384.21 |
| 24 | 2452975 | 2003-12-01 | 387.79 |
| 25 | 2453331 | 2004-11-21 | 384.79 |
| 26 | 2453708 | 2005-12-03 | 379.14 |
| 27 | 2454107 | 2007-01-06 | 377.86 |
| 28 | 2454488 | 2008-01-22 | 379.57 |
| 29 | 2454853 | 2009-01-21 | 382.43 |
| 30 | 2455233 | 2010-02-05 | 381.64 |
| 31 | 2455616 | 2011-02-23 | 380.93 |
| 32 | 2456004 | 2012-03-17 | 383 |
| 33 | 2456389 | 2013-04-06 | 385 |
| 34 | 2456769 | 2014-04-21 | 385.71 |
| 35 | 2457159 | 2015-05-16 | 385.07 |
| 36 | 2457544 | 2016-06-04 | 386.43 |
| 37 | 2457932 | 2017-06-27 | 390.5 |
| 38 | 2458317 | 2018-07-17 | 391.21 |
| 39 | 2458694 | 2019-07-29 | 390.05 |
| 40 | 2459109 | 2020-09-16 | 390.57 |
| 41 | 2459516 | 2021-10-28 | 392.5 |
| 42 | 2459889 | 2022-11-05 | 393.99 |
| 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. |