| E | O (JD) | O (dat) | Period |
| -109 | 2411677 | 1890-11-05 | 252 |
| -101 | 2413718 | 1896-06-07 | 253.3 |
| -98 | 2414497 | 1898-07-26 | 255.77 |
| -97 | 2414776 | 1899-05-01 | 255.92 |
| -96 | 2414990 | 1899-12-01 | 255.7 |
| -95 | 2415257 | 1900-08-25 | 256.85 |
| -94 | 2415522 | 1901-05-17 | 256.9 |
| -92 | 2416023 | 1902-09-30 | 258.18 |
| -91 | 2416276 | 1903-06-10 | 259.54 |
| -88 | 2417076 | 1905-08-18 | 258.17 |
| -87 | 2417335 | 1906-05-04 | 257.5 |
| -84 | 2418111 | 1908-06-18 | 257.83 |
| -81 | 2418884 | 1910-07-31 | 257.51 |
| -78 | 2419640 | 1912-08-25 | 256.7 |
| -74 | 2420660 | 1915-06-11 | 256.02 |
| -68 | 2422210 | 1919-09-08 | 255.68 |
| -66 | 2422730 | 1921-02-09 | 256.56 |
| -65 | 2422976 | 1921-10-13 | 257.03 |
| -64 | 2423223 | 1922-06-17 | 255.76 |
| -63 | 2423488 | 1923-03-09 | 253.6 |
| -62 | 2423759 | 1923-12-05 | 253.21 |
| -61 | 2423995 | 1924-07-28 | 254.43 |
| -60 | 2424246 | 1925-04-05 | 253.79 |
| -59 | 2424498 | 1925-12-13 | 250.71 |
| -58 | 2424753 | 1926-08-25 | 250.21 |
| -57 | 2425008 | 1927-05-07 | 251.57 |
| -56 | 2425256 | 1928-01-10 | 251.57 |
| -55 | 2425501 | 1928-09-11 | 252.29 |
| -54 | 2425756 | 1929-05-24 | 252.36 |
| -53 | 2426007 | 1930-01-30 | 251.14 |
| -52 | 2426259 | 1930-10-09 | 251.14 |
| -51 | 2426524 | 1931-07-01 | 252.29 |
| -50 | 2426770 | 1932-03-03 | 253.86 |
| -49 | 2427010 | 1932-10-29 | 253.86 |
| -48 | 2427263 | 1933-07-09 | 252.5 |
| -47 | 2427526 | 1934-03-29 | 252.5 |
| -46 | 2427791 | 1934-12-19 | 254.86 |
| -45 | 2428029 | 1935-08-14 | 257.14 |
| -44 | 2428289 | 1936-04-30 | 257.07 |
| -43 | 2428540 | 1937-01-06 | 256.06 |
| -42 | 2428808 | 1937-10-01 | 256.89 |
| -41 | 2429065 | 1938-06-15 | 257.6 |
| -39 | 2429580 | 1939-11-12 | 257.62 |
| -38 | 2429834 | 1940-07-23 | 257.5 |
| -35 | 2430610 | 1942-09-07 | 256.82 |
| -34 | 2430860 | 1943-05-15 | 255.81 |
| -32 | 2431379 | 1944-10-15 | 255.7 |
| -31 | 2431634 | 1945-06-27 | 256.56 |
| -30 | 2431889 | 1946-03-09 | 256.25 |
| -29 | 2432128 | 1946-11-03 | 255.27 |
| -28 | 2432400 | 1947-08-02 | 254.86 |
| -27 | 2432662 | 1948-04-20 | 255.43 |
| -26 | 2432908 | 1948-12-22 | 256.14 |
| -25 | 2433160 | 1949-08-31 | 255.07 |
| -24 | 2433421 | 1950-05-19 | 253.07 |
| -23 | 2433678 | 1951-01-31 | 253.5 |
| -22 | 2433925 | 1951-10-05 | 255.43 |
| -21 | 2434174 | 1952-06-10 | 256.07 |
| -20 | 2434431 | 1953-02-22 | 255.5 |
| -19 | 2434688 | 1953-11-06 | 256.43 |
| -18 | 2434956 | 1954-08-01 | 257.21 |
| -17 | 2435210 | 1955-04-12 | 257 |
| -16 | 2435466 | 1955-12-24 | 256.86 |
| -15 | 2435727 | 1956-09-10 | 255.93 |
| -14 | 2435973 | 1957-05-14 | 254.71 |
| -13 | 2436230 | 1958-01-26 | 254.86 |
| -12 | 2436485 | 1958-10-08 | 256.14 |
| -11 | 2436742 | 1959-06-22 | 257 |
| -10 | 2436990 | 1960-02-25 | 257.5 |
| -9 | 2437254 | 1960-11-15 | 258.64 |
| -8 | 2437525 | 1961-08-13 | 260.07 |
| -7 | 2437773 | 1962-04-18 | 261.07 |
| -6 | 2438035 | 1963-01-05 | 261.14 |
| -5 | 2438301 | 1963-09-28 | 260.71 |
| -4 | 2438567 | 1964-06-20 | 261.21 |
| -3 | 2438820 | 1965-02-28 | 261 |
| -2 | 2439080 | 1965-11-15 | 260.36 |
| -1 | 2439349 | 1966-08-11 | 260.07 |
| 0 | 2439606 | 1967-04-25 | 259.43 |
| 1 | 2439856 | 1967-12-31 | 259 |
| 2 | 2440125 | 1968-09-25 | 258.57 |
| 3 | 2440384 | 1969-06-11 | 257.79 |
| 4 | 2440635 | 1970-02-17 | 258.5 |
| 5 | 2440891 | 1970-10-31 | 259.14 |
| 6 | 2441158 | 1971-07-25 | 257.93 |
| 7 | 2441406 | 1972-03-29 | 257.43 |
| 8 | 2441675 | 1972-12-23 | 257.79 |
| 9 | 2441934 | 1973-09-08 | 258.07 |
| 10 | 2442186 | 1974-05-18 | 258.5 |
| 11 | 2442437 | 1975-01-24 | 257.43 |
| 12 | 2442698 | 1975-10-12 | 257.5 |
| 13 | 2442964 | 1976-07-04 | 258.86 |
| 14 | 2443219 | 1977-03-16 | 258.86 |
| 15 | 2443466 | 1977-11-18 | 259.36 |
| 16 | 2443748 | 1978-08-27 | 258.93 |
| 17 | 2443996 | 1979-05-02 | 259.14 |
| 18 | 2444251 | 1980-01-12 | 259.93 |
| 19 | 2444515 | 1980-10-02 | 258.79 |
| 20 | 2444772 | 1981-06-16 | 257.57 |
| 21 | 2445039 | 1982-03-10 | 258.29 |
| 22 | 2445285 | 1982-11-11 | 257.79 |
| 23 | 2445552 | 1983-08-05 | 256.07 |
| 24 | 2445798 | 1984-04-07 | 254.43 |
| 25 | 2446065 | 1984-12-30 | 253.14 |
| 26 | 2446310 | 1985-09-01 | 253 |
| 27 | 2446562 | 1986-05-11 | 253.57 |
| 28 | 2446811 | 1987-01-15 | 252.64 |
| 29 | 2447057 | 1987-09-18 | 250.71 |
| 30 | 2447322 | 1988-06-09 | 250.57 |
| 31 | 2447578 | 1989-02-20 | 251 |
| 32 | 2447822 | 1989-10-22 | 252.07 |
| 33 | 2448063 | 1990-06-20 | 252.5 |
| 34 | 2448317 | 1991-03-01 | 251.93 |
| 35 | 2448570 | 1991-11-09 | 252.57 |
| 36 | 2448827 | 1992-07-23 | 254.29 |
| 37 | 2449087 | 1993-04-09 | 255.64 |
| 38 | 2449340 | 1993-12-18 | 256.57 |
| 39 | 2449596 | 1994-08-31 | 257.36 |
| 40 | 2449849 | 1995-05-11 | 257.07 |
| 41 | 2450110 | 1996-01-27 | 256.71 |
| 42 | 2450369 | 1996-10-12 | 255.93 |
| 43 | 2450631 | 1997-07-01 | 255.79 |
| 44 | 2450882 | 1998-03-09 | 256.64 |
| 45 | 2451139 | 1998-11-21 | 256.86 |
| 46 | 2451380 | 1999-07-20 | 257.07 |
| 47 | 2451646 | 2000-04-11 | 257.07 |
| 48 | 2451906 | 2000-12-27 | 256.64 |
| 49 | 2452169 | 2001-09-16 | 256.57 |
| 50 | 2452430 | 2002-06-04 | 256.86 |
| 51 | 2452682 | 2003-02-11 | 256.5 |
| 52 | 2452932 | 2003-10-19 | 255.64 |
| 53 | 2453179 | 2004-06-22 | 254.14 |
| 54 | 2453443 | 2005-03-13 | 253.43 |
| 55 | 2453700 | 2005-11-25 | 254 |
| 56 | 2453954 | 2006-08-06 | 255.14 |
| 57 | 2454203 | 2007-04-12 | 256.07 |
| 58 | 2454457 | 2007-12-22 | 256.36 |
| 59 | 2454713 | 2008-09-03 | 255.29 |
| 60 | 2454970 | 2009-05-18 | 255.57 |
| 61 | 2455237 | 2010-02-09 | 255.36 |
| 62 | 2455495 | 2010-10-25 | 254 |
| 63 | 2455733 | 2011-06-20 | 254.36 |
| 64 | 2456002 | 2012-03-15 | 254 |
| 65 | 2456233 | 2012-11-01 | 253.5 |
| 66 | 2456493 | 2013-07-19 | 254.43 |
| 67 | 2456751 | 2014-04-03 | 255.14 |
| 68 | 2457012 | 2014-12-20 | 256.5 |
| 69 | 2457269 | 2015-09-03 | 257.79 |
| 70 | 2457521 | 2016-05-12 | 256.14 |
| 71 | 2457786 | 2017-02-01 | 253.36 |
| 72 | 2458040 | 2017-10-13 | 251.86 |
| 73 | 2458295 | 2018-06-25 | 253 |
| 74 | 2458535 | 2019-02-20 | 252.64 |
| 75 | 2458775 | 2019-10-18 | 251 |
| 76 | 2459032 | 2020-07-01 | 249.97 |
| 77 | 2459300 | 2021-03-26 | 249.83 |
| 78 | 2459544 | 2021-11-25 | 254.33 |
| 79 | 2459796 | 2022-08-04 | 257.2 |
| 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. |