| E | O (JD) | O (dat) | Period |
| -94 | 2407694 | 1879-12-10 | 384.54 |
| -93 | 2408080 | 1880-12-30 | 383.86 |
| -92 | 2408466 | 1882-01-20 | 383.75 |
| -91 | 2408846 | 1883-02-04 | 385.78 |
| -90 | 2409238 | 1884-03-02 | 385.36 |
| -89 | 2409615 | 1885-03-14 | 385.34 |
| -88 | 2409996 | 1886-03-30 | 385 |
| -87 | 2410382 | 1887-04-20 | 384.82 |
| -86 | 2410797 | 1888-06-08 | 384.93 |
| -85 | 2411156 | 1889-06-02 | 384.88 |
| -84 | 2411546 | 1890-06-27 | 385.36 |
| -83 | 2411923 | 1891-07-09 | 385.54 |
| -82 | 2412309 | 1892-07-29 | 386.25 |
| -81 | 2412698 | 1893-08-22 | 385.78 |
| -80 | 2413085 | 1894-09-13 | 386.92 |
| -79 | 2413474 | 1895-10-07 | 387.31 |
| -78 | 2413862 | 1896-10-29 | 388.03 |
| -77 | 2414266 | 1897-12-07 | 388.26 |
| -76 | 2414631 | 1898-12-07 | 388.26 |
| -75 | 2415018 | 1899-12-29 | 388.24 |
| -74 | 2415415 | 1901-01-30 | 387.64 |
| -73 | 2415806 | 1902-02-25 | 387.03 |
| -72 | 2416195 | 1903-03-21 | 386.53 |
| -71 | 2416581 | 1904-04-10 | 386.6 |
| -70 | 2416968 | 1905-05-02 | 386.25 |
| -69 | 2417345 | 1906-05-14 | 385.61 |
| -68 | 2417730 | 1907-06-03 | 385.8 |
| -67 | 2418118 | 1908-06-25 | 386.25 |
| -66 | 2418497 | 1909-07-09 | 386.8 |
| -65 | 2418896 | 1910-08-12 | 387.39 |
| -64 | 2419278 | 1911-08-29 | 388.56 |
| -63 | 2419672 | 1912-09-26 | 388.89 |
| -62 | 2420060 | 1913-10-19 | 388.9 |
| -61 | 2420446 | 1914-11-09 | 389.3 |
| -60 | 2420834 | 1915-12-02 | 389.25 |
| -59 | 2421233 | 1917-01-04 | 389.72 |
| -58 | 2421615 | 1918-01-21 | 389.86 |
| -57 | 2422000 | 1919-02-10 | 390.39 |
| -56 | 2422397 | 1920-03-13 | 390.52 |
| -55 | 2422788 | 1921-04-08 | 390.63 |
| -54 | 2423179 | 1922-05-04 | 390.62 |
| -53 | 2423570 | 1923-05-30 | 391.79 |
| -52 | 2423964 | 1924-06-27 | 392.74 |
| -51 | 2424348 | 1925-07-16 | 393.25 |
| -50 | 2424742 | 1926-08-14 | 394.26 |
| -49 | 2425133 | 1927-09-09 | 394.75 |
| -48 | 2425540 | 1928-10-20 | 395.6 |
| -47 | 2425938 | 1929-11-22 | 396.38 |
| -46 | 2426331 | 1930-12-20 | 397.01 |
| -45 | 2426732 | 1932-01-25 | 397.12 |
| -44 | 2427118 | 1933-02-14 | 397.76 |
| -43 | 2427523 | 1934-03-26 | 397.8 |
| -42 | 2427921 | 1935-04-28 | 397.71 |
| -41 | 2428315 | 1936-05-26 | 398.19 |
| -40 | 2428713 | 1937-06-28 | 397.7 |
| -39 | 2429125 | 1938-08-14 | 396.77 |
| -38 | 2429519 | 1939-09-12 | 395.4 |
| -37 | 2429905 | 1940-10-02 | 394.98 |
| -36 | 2430313 | 1941-11-14 | 394.08 |
| -35 | 2430695 | 1942-12-01 | 393.07 |
| -34 | 2431077 | 1943-12-18 | 391.91 |
| -33 | 2431473 | 1945-01-17 | 391.59 |
| -32 | 2431879 | 1946-02-27 | 391.11 |
| -31 | 2432262 | 1947-03-17 | 389.84 |
| -30 | 2432655 | 1948-04-13 | 389.08 |
| -29 | 2433042 | 1949-05-05 | 387.64 |
| -28 | 2433432 | 1950-05-30 | 385.53 |
| -27 | 2433817 | 1951-06-19 | 383.45 |
| -26 | 2434196 | 1952-07-02 | 382.18 |
| -25 | 2434576 | 1953-07-17 | 380.66 |
| -24 | 2434955 | 1954-07-31 | 379.73 |
| -23 | 2435334 | 1955-08-14 | 378.42 |
| -22 | 2435711 | 1956-08-25 | 377.18 |
| -21 | 2436089 | 1957-09-07 | 376.63 |
| -20 | 2436466 | 1958-09-19 | 376.31 |
| -19 | 2436848 | 1959-10-06 | 376.36 |
| -18 | 2437214 | 1960-10-06 | 377.22 |
| -17 | 2437582 | 1961-10-09 | 378.06 |
| -16 | 2437965 | 1962-10-27 | 379.35 |
| -15 | 2438345 | 1963-11-11 | 380.14 |
| -14 | 2438727 | 1964-11-27 | 380.99 |
| -13 | 2439120 | 1965-12-25 | 381.99 |
| -12 | 2439498 | 1967-01-07 | 383.15 |
| -11 | 2439888 | 1968-02-01 | 384.04 |
| -10 | 2440259 | 1969-02-06 | 384.97 |
| -9 | 2440642 | 1970-02-24 | 385.47 |
| -8 | 2441022 | 1971-03-11 | 386.85 |
| -7 | 2441421 | 1972-04-13 | 388.2 |
| -6 | 2441815 | 1973-05-12 | 389.62 |
| -5 | 2442203 | 1974-06-04 | 391.75 |
| -4 | 2442585 | 1975-06-21 | 393.23 |
| -3 | 2442994 | 1976-08-03 | 394.35 |
| -2 | 2443375 | 1977-08-19 | 394.76 |
| -1 | 2443774 | 1978-09-22 | 395.09 |
| 0 | 2444177 | 1979-10-30 | 395.53 |
| 1 | 2444575 | 1980-12-01 | 395.86 |
| 2 | 2444971 | 1982-01-01 | 395.58 |
| 3 | 2445365 | 1983-01-30 | 396.29 |
| 4 | 2445753 | 1984-02-22 | 396.47 |
| 5 | 2446149 | 1985-03-24 | 396.96 |
| 6 | 2446548 | 1986-04-27 | 398.26 |
| 7 | 2446945 | 1987-05-29 | 398.85 |
| 8 | 2447348 | 1988-07-05 | 399.8 |
| 9 | 2447750 | 1989-08-11 | 401.12 |
| 10 | 2448153 | 1990-09-18 | 401.27 |
| 11 | 2448563 | 1991-11-02 | 401.1 |
| 12 | 2448947 | 1992-11-20 | 400.97 |
| 13 | 2449354 | 1994-01-01 | 400.25 |
| 14 | 2449766 | 1995-02-17 | 399.29 |
| 15 | 2450155 | 1996-03-12 | 397.84 |
| 16 | 2450553 | 1997-04-14 | 396.18 |
| 17 | 2450956 | 1998-05-22 | 395.08 |
| 18 | 2451348 | 1999-06-18 | 392.92 |
| 19 | 2451740 | 2000-07-14 | 391.08 |
| 20 | 2452125 | 2001-08-03 | 389.94 |
| 21 | 2452512 | 2002-08-25 | 388.65 |
| 22 | 2452904 | 2003-09-21 | 387.64 |
| 23 | 2453288 | 2004-10-09 | 387.48 |
| 24 | 2453675 | 2005-10-31 | 387.1 |
| 25 | 2454060 | 2006-11-20 | 386.52 |
| 26 | 2454449 | 2007-12-14 | 385.35 |
| 27 | 2454836 | 2009-01-04 | 384.05 |
| 28 | 2455228 | 2010-01-31 | 383.21 |
| 29 | 2455607 | 2011-02-14 | 382.11 |
| 30 | 2455984 | 2012-02-26 | 380.97 |
| 31 | 2456358 | 2013-03-06 | 379.55 |
| 32 | 2456737 | 2014-03-20 | 378.19 |
| 33 | 2457122 | 2015-04-09 | 376.88 |
| 34 | 2457499 | 2016-04-20 | 376.36 |
| 35 | 2457876 | 2017-05-02 | 376.28 |
| 36 | 2458248 | 2018-05-09 | 376.06 |
| 37 | 2458620 | 2019-05-16 | 375.48 |
| 38 | 2458991 | 2020-05-21 | 374.73 |
| 39 | 2459369 | 2021-06-03 | 374.57 |
| 40 | 2459752 | 2022-06-21 | 374.69 |
| 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. |