| E | O (JD) | O (dat) | Period |
| -134 | 2399314 | 1856-12-30 | 334.47 |
| -133 | 2399628 | 1857-11-09 | 334.32 |
| -132 | 2399963 | 1858-10-10 | 333.64 |
| -131 | 2400309 | 1859-09-21 | 332.52 |
| -125 | 2402312 | 1865-03-16 | 332.69 |
| -124 | 2402644 | 1866-02-11 | 333.69 |
| -123 | 2402971 | 1867-01-04 | 332.14 |
| -121 | 2403633 | 1868-10-27 | 329.41 |
| -120 | 2403959 | 1869-09-18 | 327.54 |
| -119 | 2404308 | 1870-09-02 | 327.25 |
| -115 | 2405596 | 1874-03-13 | 327.52 |
| -114 | 2405919 | 1875-01-30 | 328.25 |
| -111 | 2406898 | 1877-10-05 | 328.43 |
| -108 | 2407880 | 1880-06-13 | 328.68 |
| -107 | 2408222 | 1881-05-21 | 330.27 |
| -106 | 2408561 | 1882-04-25 | 331.25 |
| -105 | 2408902 | 1883-04-01 | 332.94 |
| -104 | 2409219 | 1884-02-12 | 333.93 |
| -103 | 2409562 | 1885-01-20 | 332 |
| -102 | 2409880 | 1885-12-04 | 331.46 |
| -101 | 2410225 | 1886-11-14 | 332.04 |
| -99 | 2410886 | 1888-09-05 | 331.86 |
| -95 | 2412205 | 1892-04-16 | 331.54 |
| -94 | 2412550 | 1893-03-27 | 331.18 |
| -93 | 2412876 | 1894-02-16 | 331.32 |
| -92 | 2413206 | 1895-01-12 | 331.78 |
| -91 | 2413530 | 1895-12-02 | 331.75 |
| -85 | 2415517 | 1901-05-12 | 331.62 |
| -84 | 2415865 | 1902-04-25 | 331.79 |
| -83 | 2416184 | 1903-03-10 | 332.59 |
| -82 | 2416533 | 1904-02-22 | 333.27 |
| -81 | 2416852 | 1905-01-06 | 332.78 |
| -80 | 2417193 | 1905-12-13 | 331.57 |
| -79 | 2417525 | 1906-11-10 | 331.43 |
| -78 | 2417854 | 1907-10-05 | 332.36 |
| -77 | 2418187 | 1908-09-02 | 332.5 |
| -76 | 2418504 | 1909-07-16 | 332.5 |
| -75 | 2418853 | 1910-06-30 | 333.78 |
| -74 | 2419185 | 1911-05-28 | 333.64 |
| -73 | 2419515 | 1912-04-22 | 334.79 |
| -72 | 2419858 | 1913-03-31 | 335.36 |
| -71 | 2420194 | 1914-03-02 | 334.71 |
| -70 | 2420518 | 1915-01-20 | 335.71 |
| -69 | 2420860 | 1915-12-28 | 336.28 |
| -68 | 2421192 | 1916-11-24 | 336.29 |
| -67 | 2421532 | 1917-10-30 | 336.5 |
| -66 | 2421868 | 1918-10-01 | 337.07 |
| -65 | 2422213 | 1919-09-11 | 338.07 |
| -64 | 2422547 | 1920-08-10 | 338.57 |
| -63 | 2422876 | 1921-07-05 | 338.29 |
| -62 | 2423221 | 1922-06-15 | 337.36 |
| -61 | 2423564 | 1923-05-24 | 336.5 |
| -60 | 2423900 | 1924-04-24 | 336.85 |
| -59 | 2424236 | 1925-03-26 | 336.07 |
| -58 | 2424568 | 1926-02-21 | 335.15 |
| -57 | 2424903 | 1927-01-22 | 335.93 |
| -56 | 2425236 | 1927-12-21 | 335.93 |
| -55 | 2425566 | 1928-11-15 | 336.28 |
| -54 | 2425911 | 1929-10-26 | 337.21 |
| -53 | 2426256 | 1930-10-06 | 337.22 |
| -52 | 2426583 | 1931-08-29 | 335.86 |
| -51 | 2426929 | 1932-08-09 | 333.93 |
| -50 | 2427263 | 1933-07-09 | 332.71 |
| -49 | 2427597 | 1934-06-08 | 331.93 |
| -48 | 2427907 | 1935-04-14 | 331 |
| -47 | 2428245 | 1936-03-17 | 330.5 |
| -46 | 2428580 | 1937-02-15 | 330.93 |
| -45 | 2428906 | 1938-01-07 | 331.57 |
| -44 | 2429240 | 1938-12-07 | 331.14 |
| -43 | 2429579 | 1939-11-11 | 329.29 |
| -42 | 2429914 | 1940-10-11 | 329.08 |
| -41 | 2430232 | 1941-08-25 | 329.5 |
| -40 | 2430556 | 1942-07-15 | 329.57 |
| -39 | 2430879 | 1943-06-03 | 328.57 |
| -38 | 2431214 | 1944-05-03 | 328.43 |
| -37 | 2431545 | 1945-03-30 | 329.43 |
| -36 | 2431888 | 1946-03-08 | 329.64 |
| -35 | 2432205 | 1947-01-19 | 330.28 |
| -34 | 2432539 | 1947-12-19 | 330.14 |
| -33 | 2432861 | 1948-11-05 | 329.08 |
| -32 | 2433189 | 1949-09-29 | 329.5 |
| -31 | 2433528 | 1950-09-03 | 330.07 |
| -30 | 2433853 | 1951-07-25 | 330.64 |
| -29 | 2434187 | 1952-06-23 | 332.35 |
| -28 | 2434519 | 1953-05-21 | 333.22 |
| -27 | 2434846 | 1954-04-13 | 334 |
| -26 | 2435183 | 1955-03-16 | 335.14 |
| -25 | 2435520 | 1956-02-16 | 335.5 |
| -24 | 2435862 | 1957-01-23 | 335.57 |
| -23 | 2436195 | 1957-12-22 | 336.43 |
| -22 | 2436537 | 1958-11-29 | 337.36 |
| -21 | 2436866 | 1959-10-24 | 337.07 |
| -20 | 2437197 | 1960-09-19 | 336.78 |
| -19 | 2437542 | 1961-08-30 | 336.43 |
| -18 | 2437884 | 1962-08-07 | 335.65 |
| -17 | 2438217 | 1963-07-06 | 335.93 |
| -16 | 2438555 | 1964-06-08 | 335.43 |
| -15 | 2438887 | 1965-05-06 | 334.21 |
| -14 | 2439215 | 1966-03-30 | 333.71 |
| -13 | 2439551 | 1967-03-01 | 333.36 |
| -12 | 2439884 | 1968-01-28 | 333.86 |
| -11 | 2440221 | 1968-12-30 | 335.21 |
| -10 | 2440552 | 1969-11-26 | 334.71 |
| -9 | 2440887 | 1970-10-27 | 334.43 |
| -8 | 2441229 | 1971-10-04 | 335.43 |
| -7 | 2441566 | 1972-09-05 | 336.36 |
| -6 | 2441886 | 1973-07-22 | 336.71 |
| -5 | 2442231 | 1974-07-02 | 335.71 |
| -4 | 2442570 | 1975-06-06 | 335.57 |
| -3 | 2442912 | 1976-05-13 | 337.15 |
| -2 | 2443241 | 1977-04-07 | 338.29 |
| -1 | 2443575 | 1978-03-07 | 336.5 |
| 0 | 2443918 | 1979-02-13 | 334.85 |
| 1 | 2444254 | 1980-01-15 | 334.57 |
| 2 | 2444599 | 1980-12-25 | 333.36 |
| 3 | 2444913 | 1981-11-04 | 331.43 |
| 4 | 2445257 | 1982-10-14 | 329.71 |
| 5 | 2445580 | 1983-09-02 | 328.21 |
| 6 | 2445903 | 1984-07-21 | 327.78 |
| 7 | 2446230 | 1985-06-13 | 327.58 |
| 8 | 2446558 | 1986-05-07 | 327.36 |
| 9 | 2446890 | 1987-04-04 | 328.57 |
| 10 | 2447211 | 1988-02-19 | 329.07 |
| 11 | 2447545 | 1989-01-18 | 330.14 |
| 12 | 2447875 | 1989-12-14 | 331.5 |
| 13 | 2448208 | 1990-11-12 | 333 |
| 14 | 2448532 | 1991-10-02 | 334 |
| 15 | 2448878 | 1992-09-12 | 334 |
| 16 | 2449211 | 1993-08-11 | 334.07 |
| 17 | 2449552 | 1994-07-18 | 334.86 |
| 18 | 2449880 | 1995-06-11 | 335.43 |
| 19 | 2450216 | 1996-05-12 | 333.28 |
| 20 | 2450544 | 1997-04-05 | 330.78 |
| 21 | 2450884 | 1998-03-11 | 330 |
| 22 | 2451222 | 1999-02-12 | 330.15 |
| 23 | 2451533 | 1999-12-20 | 329.86 |
| 24 | 2451861 | 2000-11-12 | 329.28 |
| 25 | 2452191 | 2001-10-08 | 329.07 |
| 26 | 2452527 | 2002-09-09 | 331 |
| 27 | 2452851 | 2003-07-30 | 332.22 |
| 28 | 2453187 | 2004-06-30 | 331.65 |
| 29 | 2453526 | 2005-06-04 | 331.35 |
| 30 | 2453863 | 2006-05-07 | 332.07 |
| 31 | 2454182 | 2007-03-22 | 332.85 |
| 32 | 2454513 | 2008-02-16 | 332.5 |
| 33 | 2454844 | 2009-01-12 | 332.36 |
| 34 | 2455183 | 2009-12-17 | 333.5 |
| 35 | 2455515 | 2010-11-14 | 336.14 |
| 36 | 2455853 | 2011-10-18 | 336.93 |
| 37 | 2456189 | 2012-09-18 | 335.58 |
| 38 | 2456525 | 2013-08-20 | 336 |
| 39 | 2456876 | 2014-08-06 | 337.43 |
| 40 | 2457198 | 2015-06-24 | 337.78 |
| 41 | 2457527 | 2016-05-18 | 336.78 |
| 42 | 2457875 | 2017-05-01 | 334 |
| 43 | 2458217 | 2018-04-08 | 333.08 |
| 44 | 2458554 | 2019-03-11 | 334.28 |
| 45 | 2458875 | 2020-01-26 | 334.3 |
| 46 | 2459202 | 2020-12-18 | 331.77 |
| 47 | 2459535 | 2021-11-16 | 328.34 |
| 48 | 2459870 | 2022-10-17 | 326.62 |
| 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. |