| E | O (JD) | O (dat) | Period |
| -122 | 2396339 | 1848-11-07 | 380.55 |
| -120 | 2397098 | 1850-12-06 | 379.38 |
| -119 | 2397477 | 1851-12-20 | 379.33 |
| -118 | 2397860 | 1853-01-06 | 379.59 |
| -117 | 2398240 | 1854-01-21 | 379.91 |
| -116 | 2398613 | 1855-01-29 | 380.82 |
| -105 | 2402793 | 1866-07-10 | 381.65 |
| -104 | 2403171 | 1867-07-23 | 381.94 |
| -103 | 2403563 | 1868-08-18 | 382.68 |
| -102 | 2403960 | 1869-09-19 | 384.67 |
| -101 | 2404353 | 1870-10-17 | 387.43 |
| -100 | 2404733 | 1871-11-01 | 387.29 |
| -99 | 2405131 | 1872-12-03 | 384.24 |
| -98 | 2405507 | 1873-12-14 | 381.85 |
| -97 | 2405881 | 1874-12-23 | 377.94 |
| -96 | 2406275 | 1876-01-21 | 375.82 |
| -92 | 2407780 | 1880-03-05 | 375.66 |
| -91 | 2408170 | 1881-03-30 | 375.13 |
| -78 | 2413010 | 1894-06-30 | 373.65 |
| -77 | 2413390 | 1895-07-15 | 372.91 |
| -76 | 2413777 | 1896-08-05 | 372.29 |
| -73 | 2414867 | 1899-07-31 | 371.2 |
| -72 | 2415224 | 1900-07-23 | 369.17 |
| -71 | 2415612 | 1901-08-15 | 368.61 |
| -70 | 2415974 | 1902-08-12 | 370.06 |
| -69 | 2416342 | 1903-08-15 | 372.5 |
| -68 | 2416703 | 1904-08-10 | 372.71 |
| -67 | 2417099 | 1905-09-10 | 372.21 |
| -66 | 2417466 | 1906-09-12 | 372.93 |
| -65 | 2417840 | 1907-09-21 | 374 |
| -64 | 2418214 | 1908-09-29 | 373.93 |
| -63 | 2418583 | 1909-10-03 | 373.64 |
| -62 | 2418954 | 1910-10-09 | 374.5 |
| -61 | 2419327 | 1911-10-17 | 375.57 |
| -60 | 2419710 | 1912-11-03 | 377.14 |
| -59 | 2420086 | 1913-11-14 | 378.29 |
| -58 | 2420463 | 1914-11-26 | 380.43 |
| -57 | 2420849 | 1915-12-17 | 381.07 |
| -56 | 2421228 | 1916-12-30 | 380.21 |
| -55 | 2421605 | 1918-01-11 | 380.57 |
| -54 | 2422002 | 1919-02-12 | 380.64 |
| -53 | 2422370 | 1920-02-15 | 380.79 |
| -52 | 2422749 | 1921-02-28 | 381.71 |
| -51 | 2423128 | 1922-03-14 | 380.57 |
| -50 | 2423513 | 1923-04-03 | 379.43 |
| -49 | 2423895 | 1924-04-19 | 380.5 |
| -48 | 2424282 | 1925-05-11 | 381.57 |
| -47 | 2424653 | 1926-05-17 | 382 |
| -46 | 2425031 | 1927-05-30 | 381.86 |
| -45 | 2425415 | 1928-06-17 | 380.79 |
| -44 | 2425804 | 1929-07-11 | 379.79 |
| -43 | 2426185 | 1930-07-27 | 380.64 |
| -42 | 2426569 | 1931-08-15 | 381.14 |
| -41 | 2426939 | 1932-08-19 | 379.64 |
| -40 | 2427313 | 1933-08-28 | 378.57 |
| -39 | 2427700 | 1934-09-19 | 378.64 |
| -38 | 2428082 | 1935-10-06 | 378.21 |
| -37 | 2428452 | 1936-10-10 | 379 |
| -36 | 2428837 | 1937-10-30 | 378.64 |
| -35 | 2429218 | 1938-11-15 | 376.64 |
| -34 | 2429585 | 1939-11-17 | 376 |
| -33 | 2429973 | 1940-12-09 | 375 |
| -32 | 2430341 | 1941-12-12 | 374.43 |
| -31 | 2430714 | 1942-12-20 | 374.64 |
| -30 | 2431084 | 1943-12-25 | 373.64 |
| -29 | 2431455 | 1944-12-30 | 373.14 |
| -28 | 2431842 | 1946-01-21 | 374.21 |
| -27 | 2432206 | 1947-01-20 | 376.21 |
| -26 | 2432583 | 1948-02-01 | 377.43 |
| -25 | 2432955 | 1949-02-07 | 376.64 |
| -24 | 2433339 | 1950-02-26 | 377 |
| -23 | 2433726 | 1951-03-20 | 378.36 |
| -22 | 2434097 | 1952-03-25 | 380.21 |
| -21 | 2434473 | 1953-04-05 | 381.36 |
| -20 | 2434853 | 1954-04-20 | 380.21 |
| -19 | 2435233 | 1955-05-05 | 379.79 |
| -18 | 2435628 | 1956-06-03 | 380.21 |
| -17 | 2436005 | 1957-06-15 | 380.21 |
| -16 | 2436383 | 1958-06-28 | 381 |
| -15 | 2436757 | 1959-07-07 | 380.71 |
| -14 | 2437136 | 1960-07-20 | 380.57 |
| -13 | 2437513 | 1961-08-01 | 381.5 |
| -12 | 2437907 | 1962-08-30 | 381.21 |
| -11 | 2438284 | 1963-09-11 | 382.14 |
| -10 | 2438677 | 1964-10-08 | 383.07 |
| -9 | 2439052 | 1965-10-18 | 381.64 |
| -8 | 2439425 | 1966-10-26 | 380.36 |
| -7 | 2439818 | 1967-11-23 | 380.07 |
| -6 | 2440194 | 1968-12-03 | 379.57 |
| -5 | 2440569 | 1969-12-13 | 379.64 |
| -4 | 2440947 | 1970-12-26 | 377.86 |
| -3 | 2441335 | 1972-01-18 | 376.57 |
| -2 | 2441708 | 1973-01-25 | 376.57 |
| -1 | 2442084 | 1974-02-05 | 375.93 |
| 0 | 2442449 | 1975-02-05 | 373.71 |
| 1 | 2442835 | 1976-02-26 | 370.93 |
| 2 | 2443200 | 1977-02-25 | 370.21 |
| 3 | 2443579 | 1978-03-11 | 371.36 |
| 4 | 2443935 | 1979-03-02 | 370.79 |
| 5 | 2444301 | 1980-03-02 | 370.14 |
| 6 | 2444674 | 1981-03-10 | 371.57 |
| 7 | 2445058 | 1982-03-29 | 372.64 |
| 8 | 2445417 | 1983-03-23 | 374.57 |
| 9 | 2445800 | 1984-04-09 | 375.93 |
| 10 | 2446181 | 1985-04-25 | 375.43 |
| 11 | 2446550 | 1986-04-29 | 375.5 |
| 12 | 2446930 | 1987-05-14 | 375.79 |
| 13 | 2447308 | 1988-05-26 | 375.36 |
| 14 | 2447680 | 1989-06-02 | 376.86 |
| 15 | 2448052 | 1990-06-09 | 377.79 |
| 16 | 2448426 | 1991-06-18 | 377.29 |
| 17 | 2448810 | 1992-07-06 | 376.57 |
| 18 | 2449197 | 1993-07-28 | 377 |
| 19 | 2449572 | 1994-08-07 | 377.79 |
| 20 | 2449948 | 1995-08-18 | 377.57 |
| 21 | 2450312 | 1996-08-16 | 377.07 |
| 22 | 2450698 | 1997-09-06 | 376.86 |
| 23 | 2451069 | 1998-09-12 | 377.79 |
| 24 | 2451453 | 1999-10-01 | 378.93 |
| 25 | 2451833 | 2000-10-15 | 378.79 |
| 26 | 2452212 | 2001-10-29 | 378.57 |
| 27 | 2452597 | 2002-11-18 | 378.36 |
| 28 | 2452968 | 2003-11-24 | 377.43 |
| 29 | 2453345 | 2004-12-05 | 376.5 |
| 30 | 2453722 | 2005-12-17 | 375.21 |
| 31 | 2454097 | 2006-12-27 | 375.21 |
| 32 | 2454473 | 2008-01-07 | 375.79 |
| 33 | 2454843 | 2009-01-11 | 375.79 |
| 34 | 2455219 | 2010-01-22 | 375.93 |
| 35 | 2455599 | 2011-02-06 | 377.21 |
| 36 | 2455975 | 2012-02-17 | 378.57 |
| 37 | 2456353 | 2013-03-01 | 379 |
| 38 | 2456729 | 2014-03-12 | 378.5 |
| 39 | 2457122 | 2015-04-09 | 377.57 |
| 40 | 2457494 | 2016-04-15 | 377.93 |
| 41 | 2457874 | 2017-04-30 | 378.07 |
| 42 | 2458243 | 2018-05-04 | 376.79 |
| 43 | 2458617 | 2019-05-13 | 375.94 |
| 44 | 2459002 | 2020-06-01 | 375.31 |
| 45 | 2459373 | 2021-06-07 | 375.92 |
| 46 | 2459753 | 2022-06-22 | 377.3 |
| 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. |