| E | O (JD) | O (dat) | Period |
| -84 | 2412088 | 1891-12-21 | 368.49 |
| -83 | 2412461 | 1892-12-28 | 366.11 |
| -82 | 2412837 | 1894-01-08 | 367.86 |
| -81 | 2413200 | 1895-01-06 | 368.48 |
| -80 | 2413559 | 1895-12-31 | 368.56 |
| -79 | 2413936 | 1897-01-11 | 368.98 |
| -78 | 2414281 | 1897-12-22 | 369.22 |
| -77 | 2414680 | 1899-01-25 | 369.39 |
| -76 | 2415045 | 1900-01-25 | 370.05 |
| -75 | 2415409 | 1901-01-24 | 371.19 |
| -74 | 2415786 | 1902-02-05 | 371.39 |
| -73 | 2416156 | 1903-02-10 | 372.3 |
| -71 | 2416890 | 1905-02-13 | 371.6 |
| -70 | 2417263 | 1906-02-21 | 371.25 |
| -69 | 2417651 | 1907-03-16 | 370.89 |
| -68 | 2418014 | 1908-03-13 | 370.33 |
| -67 | 2418397 | 1909-03-31 | 371.08 |
| -66 | 2418759 | 1910-03-28 | 371.93 |
| -65 | 2419110 | 1911-03-14 | 372.16 |
| -64 | 2419484 | 1912-03-22 | 372.45 |
| -63 | 2419857 | 1913-03-30 | 373.53 |
| -62 | 2420252 | 1914-04-29 | 374.13 |
| -61 | 2420627 | 1915-05-09 | 374.65 |
| -60 | 2420998 | 1916-05-14 | 375.04 |
| -59 | 2421373 | 1917-05-24 | 374.25 |
| -58 | 2421747 | 1918-06-02 | 373.11 |
| -57 | 2422120 | 1919-06-10 | 372.04 |
| -56 | 2422480 | 1920-06-04 | 371.51 |
| -55 | 2422859 | 1921-06-18 | 372.28 |
| -54 | 2423232 | 1922-06-26 | 372.26 |
| -53 | 2423600 | 1923-06-29 | 372.55 |
| -52 | 2423977 | 1924-07-10 | 373.18 |
| -51 | 2424339 | 1925-07-07 | 373.65 |
| -50 | 2424735 | 1926-08-07 | 374.59 |
| -49 | 2425094 | 1927-08-01 | 375.85 |
| -48 | 2425470 | 1928-08-11 | 376.72 |
| -47 | 2425848 | 1929-08-24 | 376.45 |
| -46 | 2426217 | 1930-08-28 | 376.66 |
| -45 | 2426615 | 1931-09-30 | 376.15 |
| -44 | 2426994 | 1932-10-13 | 376.61 |
| -43 | 2427365 | 1933-10-19 | 376.2 |
| -42 | 2427725 | 1934-10-14 | 375.98 |
| -41 | 2428108 | 1935-11-01 | 375.79 |
| -40 | 2428484 | 1936-11-11 | 375.34 |
| -39 | 2428859 | 1937-11-21 | 376.15 |
| -38 | 2429234 | 1938-12-01 | 377.2 |
| -37 | 2429615 | 1939-12-17 | 378.07 |
| -36 | 2429991 | 1940-12-27 | 377.6 |
| -35 | 2430371 | 1942-01-11 | 378.56 |
| -34 | 2430752 | 1943-01-27 | 378.09 |
| -33 | 2431130 | 1944-02-09 | 377.72 |
| -32 | 2431508 | 1945-02-21 | 377.35 |
| -31 | 2431875 | 1946-02-23 | 376.8 |
| -30 | 2432277 | 1947-04-01 | 376.73 |
| -29 | 2432628 | 1948-03-17 | 376.83 |
| -28 | 2433009 | 1949-04-02 | 377.62 |
| -27 | 2433389 | 1950-04-17 | 379.14 |
| -26 | 2433759 | 1951-04-22 | 379.45 |
| -25 | 2434147 | 1952-05-14 | 378.99 |
| -24 | 2434526 | 1953-05-28 | 380.36 |
| -23 | 2434915 | 1954-06-21 | 380.12 |
| -22 | 2435310 | 1955-07-21 | 379.68 |
| -21 | 2435666 | 1956-07-11 | 379.25 |
| -20 | 2436040 | 1957-07-20 | 377.65 |
| -19 | 2436431 | 1958-08-15 | 376.51 |
| -18 | 2436805 | 1959-08-24 | 375.4 |
| -17 | 2437179 | 1960-09-01 | 374.85 |
| -16 | 2437557 | 1961-09-14 | 374.89 |
| -15 | 2437921 | 1962-09-13 | 374.08 |
| -14 | 2438298 | 1963-09-25 | 372.36 |
| -13 | 2438674 | 1964-10-05 | 371.19 |
| -12 | 2439049 | 1965-10-15 | 370.47 |
| -11 | 2439415 | 1966-10-16 | 369.32 |
| -10 | 2439790 | 1967-10-26 | 368.5 |
| -9 | 2440146 | 1968-10-16 | 367.49 |
| -8 | 2440510 | 1969-10-15 | 366.35 |
| -7 | 2440887 | 1970-10-27 | 366.13 |
| -6 | 2441245 | 1971-10-20 | 366.2 |
| -5 | 2441612 | 1972-10-21 | 365.95 |
| -4 | 2441982 | 1973-10-26 | 366.64 |
| -3 | 2442339 | 1974-10-18 | 367.05 |
| -2 | 2442716 | 1975-10-30 | 366.92 |
| -1 | 2443081 | 1976-10-29 | 367.64 |
| 0 | 2443441 | 1977-10-24 | 368.46 |
| 1 | 2443817 | 1978-11-04 | 369.24 |
| 2 | 2444189 | 1979-11-11 | 369.95 |
| 3 | 2444549 | 1980-11-05 | 370.16 |
| 4 | 2444923 | 1981-11-14 | 371.64 |
| 5 | 2445303 | 1982-11-29 | 372.83 |
| 6 | 2445673 | 1983-12-04 | 373.39 |
| 7 | 2446040 | 1984-12-05 | 373.72 |
| 8 | 2446412 | 1985-12-12 | 373.55 |
| 9 | 2446802 | 1987-01-06 | 373.02 |
| 10 | 2447175 | 1988-01-14 | 372.81 |
| 11 | 2447548 | 1989-01-21 | 372.8 |
| 12 | 2447913 | 1990-01-21 | 372.85 |
| 13 | 2448275 | 1991-01-18 | 373.06 |
| 14 | 2448652 | 1992-01-30 | 373.45 |
| 15 | 2449031 | 1993-02-12 | 374.24 |
| 16 | 2449401 | 1994-02-17 | 375.42 |
| 17 | 2449778 | 1995-03-01 | 376.36 |
| 18 | 2450162 | 1996-03-19 | 376.65 |
| 19 | 2450544 | 1997-04-05 | 375.85 |
| 20 | 2450911 | 1998-04-07 | 375.45 |
| 21 | 2451294 | 1999-04-25 | 374.79 |
| 22 | 2451665 | 2000-04-30 | 373.92 |
| 23 | 2452036 | 2001-05-06 | 372.89 |
| 24 | 2452402 | 2002-05-07 | 372.25 |
| 25 | 2452784 | 2003-05-24 | 372.47 |
| 26 | 2453150 | 2004-05-24 | 373.15 |
| 27 | 2453525 | 2005-06-03 | 374.44 |
| 28 | 2453894 | 2006-06-07 | 374.82 |
| 29 | 2454265 | 2007-06-13 | 375.4 |
| 30 | 2454646 | 2008-06-28 | 376.32 |
| 31 | 2455036 | 2009-07-23 | 377.25 |
| 32 | 2455415 | 2010-08-06 | 377.66 |
| 33 | 2455774 | 2011-07-31 | 378.22 |
| 34 | 2456155 | 2012-08-15 | 378.35 |
| 35 | 2456547 | 2013-09-11 | 378.03 |
| 36 | 2456918 | 2014-09-17 | 377.85 |
| 37 | 2457294 | 2015-09-28 | 378.95 |
| 38 | 2457676 | 2016-10-14 | 379.75 |
| 39 | 2458054 | 2017-10-27 | 379.52 |
| 40 | 2458431 | 2018-11-08 | 379.23 |
| 41 | 2458810 | 2019-11-22 | 380.04 |
| 42 | 2459203 | 2020-12-19 | 380.46 |
| 43 | 2459575 | 2021-12-26 | 380.6 |
| 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. |