| E | O (JD) | O (dat) | Period |
| -99 | 2414740 | 1899-03-26 | 323.83 |
| -98 | 2415052 | 1900-02-01 | 321.71 |
| -96 | 2415686 | 1901-10-28 | 320.44 |
| -95 | 2416000 | 1902-09-07 | 319.37 |
| -94 | 2416341 | 1903-08-14 | 318 |
| -93 | 2416650 | 1904-06-18 | 318.87 |
| -92 | 2416977 | 1905-05-11 | 320.29 |
| -91 | 2417287 | 1906-03-17 | 319.29 |
| -90 | 2417593 | 1907-01-17 | 317.93 |
| -89 | 2417928 | 1907-12-18 | 316.57 |
| -88 | 2418242 | 1908-10-27 | 316.29 |
| -87 | 2418569 | 1909-09-19 | 317.29 |
| -86 | 2418873 | 1910-07-20 | 315.86 |
| -85 | 2419186 | 1911-05-29 | 314 |
| -84 | 2419506 | 1912-04-13 | 312.93 |
| -83 | 2419816 | 1913-02-17 | 313.14 |
| -82 | 2420127 | 1913-12-25 | 314 |
| -81 | 2420439 | 1914-11-02 | 313.36 |
| -80 | 2420753 | 1915-09-12 | 314.14 |
| -79 | 2421073 | 1916-07-28 | 315 |
| -78 | 2421382 | 1917-06-02 | 315 |
| -77 | 2421697 | 1918-04-13 | 316 |
| -76 | 2422023 | 1919-03-05 | 315.79 |
| -75 | 2422330 | 1920-01-06 | 314.86 |
| -74 | 2422646 | 1920-11-17 | 314.57 |
| -73 | 2422970 | 1921-10-07 | 313.86 |
| -72 | 2423277 | 1922-08-10 | 314.86 |
| -71 | 2423586 | 1923-06-15 | 316.14 |
| -70 | 2423897 | 1924-04-21 | 315.29 |
| -69 | 2424217 | 1925-03-07 | 315.5 |
| -68 | 2424544 | 1926-01-28 | 316.71 |
| -67 | 2424858 | 1926-12-08 | 317.07 |
| -66 | 2425172 | 1927-10-18 | 317.14 |
| -65 | 2425492 | 1928-09-02 | 316.14 |
| -64 | 2425805 | 1929-07-12 | 315.93 |
| -63 | 2426117 | 1930-05-20 | 317.29 |
| -62 | 2426437 | 1931-04-05 | 316.86 |
| -61 | 2426750 | 1932-02-12 | 316.14 |
| -60 | 2427075 | 1933-01-02 | 316.64 |
| -59 | 2427397 | 1933-11-20 | 316.21 |
| -58 | 2427703 | 1934-09-22 | 315.5 |
| -57 | 2428020 | 1935-08-05 | 314.21 |
| -56 | 2428335 | 1936-06-15 | 312.57 |
| -55 | 2428646 | 1937-04-22 | 313.21 |
| -54 | 2428958 | 1938-02-28 | 313.86 |
| -53 | 2429266 | 1939-01-02 | 313.14 |
| -52 | 2429582 | 1939-11-14 | 312.57 |
| -51 | 2429903 | 1940-09-30 | 311.71 |
| -50 | 2430214 | 1941-08-07 | 311.29 |
| -49 | 2430525 | 1942-06-14 | 311.57 |
| -48 | 2430832 | 1943-04-17 | 311.79 |
| -47 | 2431136 | 1944-02-15 | 311.14 |
| -46 | 2431446 | 1944-12-21 | 310.07 |
| -45 | 2431764 | 1945-11-04 | 309.64 |
| -44 | 2432086 | 1946-09-22 | 310.36 |
| -43 | 2432387 | 1947-07-20 | 310.93 |
| -42 | 2432693 | 1948-05-21 | 310.21 |
| -41 | 2432999 | 1949-03-23 | 309.36 |
| -40 | 2433314 | 1950-02-01 | 309.21 |
| -39 | 2433621 | 1950-12-05 | 310.29 |
| -38 | 2433932 | 1951-10-12 | 310.64 |
| -37 | 2434249 | 1952-08-24 | 310.43 |
| -36 | 2434553 | 1953-06-24 | 310.5 |
| -35 | 2434871 | 1954-05-08 | 310.14 |
| -34 | 2435170 | 1955-03-03 | 309.43 |
| -33 | 2435489 | 1956-01-16 | 309.43 |
| -32 | 2435793 | 1956-11-15 | 309.43 |
| -31 | 2436102 | 1957-09-20 | 310.21 |
| -30 | 2436411 | 1958-07-26 | 311.43 |
| -29 | 2436723 | 1959-06-03 | 311.64 |
| -28 | 2437033 | 1960-04-08 | 311.93 |
| -27 | 2437351 | 1961-02-20 | 312.79 |
| -26 | 2437668 | 1962-01-03 | 313.57 |
| -25 | 2437977 | 1962-11-08 | 313.86 |
| -24 | 2438285 | 1963-09-12 | 314.14 |
| -23 | 2438607 | 1964-07-30 | 314.14 |
| -22 | 2438917 | 1965-06-05 | 314.71 |
| -21 | 2439233 | 1966-04-17 | 316.29 |
| -20 | 2439549 | 1967-02-27 | 317.14 |
| -19 | 2439868 | 1968-01-12 | 317.43 |
| -18 | 2440183 | 1968-11-22 | 317.71 |
| -17 | 2440507 | 1969-10-12 | 317.21 |
| -16 | 2440825 | 1970-08-26 | 316.64 |
| -15 | 2441143 | 1971-07-10 | 315.86 |
| -14 | 2441455 | 1972-05-17 | 314.93 |
| -13 | 2441768 | 1973-03-26 | 314.14 |
| -12 | 2442082 | 1974-02-03 | 313.71 |
| -11 | 2442391 | 1974-12-09 | 313.5 |
| -10 | 2442708 | 1975-10-22 | 312.86 |
| -9 | 2443022 | 1976-08-31 | 312.07 |
| -8 | 2443338 | 1977-07-13 | 310.93 |
| -7 | 2443649 | 1978-05-20 | 309.57 |
| -6 | 2443954 | 1979-03-21 | 308.07 |
| -5 | 2444265 | 1980-01-26 | 305.79 |
| -4 | 2444561 | 1980-11-17 | 303.36 |
| -3 | 2444872 | 1981-09-24 | 301.79 |
| -2 | 2445171 | 1982-07-20 | 299.57 |
| -1 | 2445470 | 1983-05-15 | 297.29 |
| 0 | 2445764 | 1984-03-04 | 295.29 |
| 1 | 2446064 | 1984-12-29 | 292.64 |
| 2 | 2446349 | 1985-10-10 | 290.79 |
| 3 | 2446639 | 1986-07-27 | 289.29 |
| 4 | 2446928 | 1987-05-12 | 287.07 |
| 5 | 2447212 | 1988-02-20 | 284.93 |
| 6 | 2447500 | 1988-12-04 | 283.36 |
| 7 | 2447784 | 1989-09-14 | 281.71 |
| 8 | 2448063 | 1990-06-20 | 279.79 |
| 9 | 2448339 | 1991-03-23 | 277.43 |
| 10 | 2448616 | 1991-12-25 | 275.79 |
| 11 | 2448895 | 1992-09-29 | 273.79 |
| 12 | 2449162 | 1993-06-23 | 270.71 |
| 13 | 2449434 | 1994-03-22 | 268.43 |
| 14 | 2449711 | 1994-12-24 | 266 |
| 15 | 2449969 | 1995-09-08 | 263.93 |
| 16 | 2450223 | 1996-05-19 | 261.64 |
| 17 | 2450490 | 1997-02-10 | 257.29 |
| 18 | 2450745 | 1997-10-23 | 253.71 |
| 19 | 2451007 | 1998-07-12 | 251.57 |
| 20 | 2451252 | 1999-03-14 | 249.5 |
| 21 | 2451495 | 1999-11-12 | 246.29 |
| 22 | 2451737 | 2000-07-11 | 242.36 |
| 23 | 2451977 | 2001-03-08 | 239.64 |
| 24 | 2452229 | 2001-11-15 | 237.36 |
| 25 | 2452454 | 2002-06-28 | 237 |
| 26 | 2452691 | 2003-02-20 | 235 |
| 27 | 2452923 | 2003-10-10 | 230.5 |
| 28 | 2453147 | 2004-05-21 | 230.29 |
| 29 | 2453403 | 2005-02-01 | 229.93 |
| 30 | 2453601 | 2005-08-18 | 228.14 |
| 31 | 2453832 | 2006-04-06 | 235.24 |
| 32 | 2454075 | 2006-12-05 | 236.6 |
| 33 | 2454289 | 2007-07-07 | 234.15 |
| 34 | 2454519 | 2008-02-22 | 234.85 |
| 38 | 2455550 | 2010-12-19 | 232.85 |
| 39 | 2455732 | 2011-06-19 | 230.8 |
| 40 | 2455955 | 2012-01-28 | 228.85 |
| 41 | 2456175 | 2012-09-04 | 219 |
| 42 | 2456389 | 2013-04-06 | 207.79 |
| 43 | 2456591 | 2013-10-25 | 207.07 |
| 44 | 2456794 | 2014-05-16 | 200.21 |
| 45 | 2456998 | 2014-12-06 | 194.36 |
| 46 | 2457193 | 2015-06-19 | 190.36 |
| 47 | 2457393 | 2016-01-05 | 191.07 |
| 48 | 2457540 | 2016-05-31 | 192.68 |
| 49 | 2457745 | 2016-12-22 | 186.31 |
| 50 | 2457900 | 2017-05-26 | 181.08 |
| 51 | 2458160 | 2018-02-10 | 177.3 |
| 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. |