| E | O (JD) | O (dat) | Period |
| -120 | 2407274 | 1878-10-16 | 291.06 |
| -119 | 2407604 | 1879-09-11 | 280.85 |
| -118 | 2407917 | 1880-07-20 | 271.96 |
| -116 | 2408405 | 1881-11-20 | 279.77 |
| -114 | 2409037 | 1883-08-14 | 277.59 |
| -112 | 2409512 | 1884-12-01 | 271.63 |
| -111 | 2409792 | 1885-09-07 | 272.52 |
| -110 | 2410110 | 1886-07-22 | 272.61 |
| -107 | 2410875 | 1888-08-25 | 272.81 |
| -103 | 2411980 | 1891-09-04 | 275.05 |
| -100 | 2412790 | 1893-11-22 | 274.59 |
| -99 | 2413103 | 1894-10-01 | 275.01 |
| -95 | 2414176 | 1897-09-08 | 276.05 |
| -83 | 2417505 | 1906-10-21 | 276.22 |
| -79 | 2418598 | 1909-10-18 | 275.77 |
| -66 | 2422188 | 1919-08-17 | 275.69 |
| -64 | 2422751 | 1921-03-02 | 275.91 |
| -63 | 2423012 | 1921-11-18 | 275.56 |
| -62 | 2423288 | 1922-08-21 | 275.18 |
| -61 | 2423565 | 1923-05-25 | 273.13 |
| -60 | 2423843 | 1924-02-27 | 272.99 |
| -59 | 2424109 | 1924-11-19 | 273.43 |
| -58 | 2424382 | 1925-08-19 | 273.22 |
| -57 | 2424654 | 1926-05-18 | 272.86 |
| -56 | 2424931 | 1927-02-19 | 273.07 |
| -55 | 2425197 | 1927-11-12 | 274.24 |
| -54 | 2425481 | 1928-08-22 | 274.75 |
| -53 | 2425747 | 1929-05-15 | 275.51 |
| -51 | 2426301 | 1930-11-20 | 275.94 |
| -50 | 2426578 | 1931-08-24 | 275.43 |
| -49 | 2426854 | 1932-05-26 | 275.74 |
| -48 | 2427139 | 1933-03-07 | 277.13 |
| -47 | 2427404 | 1933-11-27 | 277.25 |
| -46 | 2427681 | 1934-08-31 | 277.12 |
| -45 | 2427959 | 1935-06-05 | 277.5 |
| -43 | 2428523 | 1936-12-20 | 278.06 |
| -42 | 2428792 | 1937-09-15 | 279.13 |
| -41 | 2429074 | 1938-06-24 | 280 |
| -40 | 2429359 | 1939-04-05 | 279.59 |
| -39 | 2429633 | 1940-01-04 | 279.14 |
| -38 | 2429918 | 1940-10-15 | 279.86 |
| -37 | 2430202 | 1941-07-26 | 279.72 |
| -36 | 2430474 | 1942-04-24 | 279.36 |
| -35 | 2430749 | 1943-01-24 | 279.39 |
| -34 | 2431035 | 1943-11-06 | 278.75 |
| -33 | 2431314 | 1944-08-11 | 278.51 |
| -32 | 2431589 | 1945-05-13 | 279 |
| -30 | 2432153 | 1946-11-28 | 277.31 |
| -29 | 2432427 | 1947-08-29 | 276.06 |
| -28 | 2432705 | 1948-06-02 | 276.56 |
| -27 | 2432982 | 1949-03-06 | 276.01 |
| -26 | 2433239 | 1949-11-18 | 275.43 |
| -25 | 2433527 | 1950-09-02 | 275.35 |
| -24 | 2433801 | 1951-06-03 | 275.5 |
| -23 | 2434081 | 1952-03-09 | 276.65 |
| -22 | 2434355 | 1952-12-08 | 277.36 |
| -21 | 2434632 | 1953-09-11 | 277.43 |
| -20 | 2434912 | 1954-06-18 | 276.85 |
| -19 | 2435182 | 1955-03-15 | 276.78 |
| -18 | 2435467 | 1955-12-25 | 277.72 |
| -17 | 2435745 | 1956-09-28 | 277.08 |
| -16 | 2436013 | 1957-06-23 | 276.78 |
| -15 | 2436298 | 1958-04-04 | 277.06 |
| -14 | 2436577 | 1959-01-08 | 276.78 |
| -13 | 2436846 | 1959-10-04 | 275.93 |
| -12 | 2437123 | 1960-07-07 | 274.29 |
| -11 | 2437405 | 1961-04-15 | 272.71 |
| -10 | 2437682 | 1962-01-17 | 273.06 |
| -9 | 2437939 | 1962-10-01 | 273.71 |
| -8 | 2438212 | 1963-07-01 | 272.43 |
| -7 | 2438481 | 1964-03-26 | 271.43 |
| -6 | 2438765 | 1965-01-04 | 272.14 |
| -5 | 2439036 | 1965-10-02 | 272.85 |
| -4 | 2439306 | 1966-06-29 | 273.21 |
| -3 | 2439581 | 1967-03-31 | 272.93 |
| -2 | 2439850 | 1967-12-25 | 272.29 |
| -1 | 2440121 | 1968-09-21 | 272.07 |
| 0 | 2440397 | 1969-06-24 | 272.85 |
| 1 | 2440670 | 1970-03-24 | 272.64 |
| 2 | 2440943 | 1970-12-22 | 271.93 |
| 3 | 2441208 | 1971-09-13 | 272.36 |
| 4 | 2441499 | 1972-06-30 | 272.43 |
| 5 | 2441749 | 1973-03-07 | 272.78 |
| 6 | 2442029 | 1973-12-12 | 273.71 |
| 7 | 2442302 | 1974-09-11 | 273.43 |
| 8 | 2442579 | 1975-06-15 | 274.22 |
| 9 | 2442853 | 1976-03-15 | 275.78 |
| 10 | 2443130 | 1976-12-17 | 276.71 |
| 11 | 2443405 | 1977-09-18 | 277.28 |
| 12 | 2443682 | 1978-06-22 | 276.01 |
| 13 | 2443957 | 1979-03-24 | 275.29 |
| 14 | 2444248 | 1980-01-09 | 275.64 |
| 15 | 2444515 | 1980-10-02 | 275.49 |
| 16 | 2444781 | 1981-06-25 | 275.07 |
| 17 | 2445056 | 1982-03-27 | 274.51 |
| 18 | 2445338 | 1983-01-03 | 274.29 |
| 19 | 2445606 | 1983-09-28 | 276.07 |
| 20 | 2445884 | 1984-07-02 | 276.92 |
| 21 | 2446164 | 1985-04-08 | 276.36 |
| 22 | 2446439 | 1986-01-08 | 276.72 |
| 23 | 2446722 | 1986-10-18 | 277.08 |
| 24 | 2446992 | 1987-07-15 | 277 |
| 25 | 2447271 | 1988-04-19 | 276.71 |
| 26 | 2447547 | 1989-01-20 | 275.36 |
| 27 | 2447822 | 1989-10-22 | 274.51 |
| 28 | 2448104 | 1990-07-31 | 274.65 |
| 29 | 2448373 | 1991-04-26 | 274.64 |
| 30 | 2448643 | 1992-01-21 | 274.06 |
| 31 | 2448914 | 1992-10-18 | 273.36 |
| 32 | 2449194 | 1993-07-25 | 273.93 |
| 33 | 2449469 | 1994-04-26 | 275.29 |
| 34 | 2449737 | 1995-01-19 | 276 |
| 35 | 2450016 | 1995-10-25 | 275.28 |
| 36 | 2450296 | 1996-07-31 | 274.5 |
| 37 | 2450574 | 1997-05-05 | 275.29 |
| 38 | 2450847 | 1998-02-02 | 275.79 |
| 39 | 2451115 | 1998-10-28 | 274.71 |
| 40 | 2451391 | 1999-07-31 | 274.21 |
| 41 | 2451669 | 2000-05-04 | 274.28 |
| 42 | 2451945 | 2001-02-04 | 275.65 |
| 43 | 2452213 | 2001-10-30 | 277.51 |
| 44 | 2452496 | 2002-08-09 | 276.86 |
| 45 | 2452765 | 2003-05-05 | 276.56 |
| 46 | 2453056 | 2004-02-20 | 277.86 |
| 47 | 2453335 | 2004-11-25 | 277.43 |
| 48 | 2453601 | 2005-08-18 | 277.01 |
| 49 | 2453885 | 2006-05-29 | 276.36 |
| 50 | 2454163 | 2007-03-03 | 275.13 |
| 51 | 2454430 | 2007-11-25 | 275.71 |
| 52 | 2454709 | 2008-08-30 | 275.22 |
| 53 | 2454981 | 2009-05-29 | 274.93 |
| 54 | 2455262 | 2010-03-06 | 276 |
| 55 | 2455534 | 2010-12-03 | 275.99 |
| 56 | 2455805 | 2011-08-31 | 275.71 |
| 57 | 2456092 | 2012-06-13 | 275.51 |
| 58 | 2456365 | 2013-03-13 | 275.29 |
| 59 | 2456638 | 2013-12-11 | 274.71 |
| 60 | 2456912 | 2014-09-11 | 273.13 |
| 61 | 2457188 | 2015-06-14 | 272.36 |
| 62 | 2457462 | 2016-03-14 | 272.07 |
| 63 | 2457723 | 2016-11-30 | 271.44 |
| 64 | 2457998 | 2017-09-01 | 270.99 |
| 65 | 2458272 | 2018-06-02 | 271 |
| 67 | 2458812 | 2019-11-24 | 271.53 |
| 68 | 2459081 | 2020-08-19 | 271.98 |
| 69 | 2459355 | 2021-05-20 | 271.18 |
| 71 | 2459902 | 2022-11-18 | 270.8 |
| 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. |