| E | O (JD) | O (dat) | Period |
| -116 | 2401922 | 1864-02-20 | 369.66 |
| -115 | 2402293 | 1865-02-25 | 371.04 |
| -114 | 2402664 | 1866-03-03 | 371.94 |
| -113 | 2403032 | 1867-03-06 | 372.97 |
| -112 | 2403403 | 1868-03-11 | 373.49 |
| -111 | 2403770 | 1869-03-13 | 373.62 |
| -110 | 2404154 | 1870-04-01 | 374.38 |
| -109 | 2404529 | 1871-04-11 | 373.62 |
| -108 | 2404910 | 1872-04-26 | 373.62 |
| -107 | 2405283 | 1873-05-04 | 373.23 |
| -106 | 2405653 | 1874-05-09 | 372.7 |
| -105 | 2406033 | 1875-05-24 | 371.84 |
| -101 | 2407505 | 1879-06-04 | 371.76 |
| -100 | 2407888 | 1880-06-21 | 370.83 |
| -99 | 2408255 | 1881-06-23 | 370.28 |
| -98 | 2408623 | 1882-06-26 | 369.51 |
| -97 | 2408990 | 1883-06-28 | 369.05 |
| -96 | 2409377 | 1884-07-19 | 370.19 |
| -95 | 2409719 | 1885-06-26 | 370.43 |
| -94 | 2410092 | 1886-07-04 | 370.64 |
| -93 | 2410454 | 1887-07-01 | 370.88 |
| -87 | 2412682 | 1893-08-06 | 371.22 |
| -79 | 2415665 | 1901-10-07 | 371.52 |
| -78 | 2416035 | 1902-10-12 | 372.27 |
| -77 | 2416403 | 1903-10-15 | 372.5 |
| -76 | 2416780 | 1904-10-26 | 372.74 |
| -75 | 2417162 | 1905-11-12 | 373.29 |
| -74 | 2417536 | 1906-11-21 | 373.25 |
| -73 | 2417918 | 1907-12-08 | 373.42 |
| -72 | 2418281 | 1908-12-05 | 373.25 |
| -71 | 2418640 | 1909-11-29 | 372.89 |
| -70 | 2419027 | 1910-12-21 | 371.95 |
| -69 | 2419389 | 1911-12-18 | 372.2 |
| -68 | 2419773 | 1913-01-05 | 372.55 |
| -67 | 2420143 | 1914-01-10 | 372.45 |
| -66 | 2420519 | 1915-01-21 | 372.41 |
| -65 | 2420877 | 1916-01-14 | 372 |
| -64 | 2421264 | 1917-02-04 | 372.3 |
| -63 | 2421638 | 1918-02-13 | 371.8 |
| -62 | 2421990 | 1919-01-31 | 372.2 |
| -61 | 2422370 | 1920-02-15 | 372.78 |
| -60 | 2422749 | 1921-02-28 | 373.52 |
| -59 | 2423122 | 1922-03-08 | 373.95 |
| -58 | 2423489 | 1923-03-10 | 375.21 |
| -57 | 2423868 | 1924-03-23 | 376.33 |
| -56 | 2424247 | 1925-04-06 | 376.76 |
| -55 | 2424620 | 1926-04-14 | 376.87 |
| -54 | 2425004 | 1927-05-03 | 376.85 |
| -53 | 2425383 | 1928-05-16 | 376.92 |
| -52 | 2425755 | 1929-05-23 | 376.26 |
| -51 | 2426141 | 1930-06-13 | 374.83 |
| -50 | 2426508 | 1931-06-15 | 373.82 |
| -49 | 2426878 | 1932-06-19 | 372.42 |
| -48 | 2427258 | 1933-07-04 | 371.1 |
| -47 | 2427629 | 1934-07-10 | 370.05 |
| -46 | 2427985 | 1935-07-01 | 368.85 |
| -45 | 2428363 | 1936-07-13 | 369.23 |
| -44 | 2428730 | 1937-07-15 | 369.59 |
| -43 | 2429093 | 1938-07-13 | 369.73 |
| -42 | 2429462 | 1939-07-17 | 370.71 |
| -41 | 2429828 | 1940-07-17 | 371.56 |
| -40 | 2430214 | 1941-08-07 | 372.51 |
| -39 | 2430588 | 1942-08-16 | 373.31 |
| -38 | 2430955 | 1943-08-18 | 373.63 |
| -37 | 2431333 | 1944-08-30 | 373.38 |
| -36 | 2431700 | 1945-09-01 | 372.93 |
| -35 | 2432089 | 1946-09-25 | 372.12 |
| -34 | 2432453 | 1947-09-24 | 372.25 |
| -33 | 2432820 | 1948-09-25 | 372.34 |
| -32 | 2433190 | 1949-09-30 | 371.93 |
| -31 | 2433562 | 1950-10-07 | 371.71 |
| -30 | 2433935 | 1951-10-15 | 371.34 |
| -29 | 2434314 | 1952-10-28 | 371.95 |
| -28 | 2434684 | 1953-11-02 | 372.81 |
| -27 | 2435052 | 1954-11-05 | 373.31 |
| -26 | 2435422 | 1955-11-10 | 373.2 |
| -25 | 2435796 | 1956-11-18 | 372.74 |
| -24 | 2436170 | 1957-11-27 | 371.89 |
| -23 | 2436555 | 1958-12-17 | 370.99 |
| -22 | 2436927 | 1959-12-24 | 370.53 |
| -21 | 2437291 | 1960-12-22 | 369.54 |
| -20 | 2437657 | 1961-12-23 | 368.68 |
| -19 | 2438020 | 1962-12-21 | 367.88 |
| -18 | 2438381 | 1963-12-17 | 367.56 |
| -17 | 2438760 | 1964-12-30 | 368.09 |
| -16 | 2439122 | 1965-12-27 | 368.66 |
| -15 | 2439495 | 1967-01-04 | 369.55 |
| -14 | 2439862 | 1968-01-06 | 370.75 |
| -13 | 2440237 | 1969-01-15 | 371.36 |
| -12 | 2440607 | 1970-01-20 | 371.19 |
| -11 | 2440972 | 1971-01-20 | 371.36 |
| -10 | 2441351 | 1972-02-03 | 372.05 |
| -9 | 2441731 | 1973-02-17 | 372.8 |
| -8 | 2442097 | 1974-02-18 | 373.25 |
| -7 | 2442462 | 1975-02-18 | 373.81 |
| -6 | 2442831 | 1976-02-22 | 374.68 |
| -5 | 2443222 | 1977-03-19 | 375.24 |
| -4 | 2443596 | 1978-03-28 | 375.52 |
| -3 | 2443969 | 1979-04-05 | 376.11 |
| -2 | 2444343 | 1980-04-13 | 376.38 |
| -1 | 2444727 | 1981-05-02 | 375.91 |
| 0 | 2445106 | 1982-05-16 | 375.08 |
| 1 | 2445472 | 1983-05-17 | 374.63 |
| 2 | 2445847 | 1984-05-26 | 373.97 |
| 3 | 2446224 | 1985-06-07 | 373.46 |
| 4 | 2446595 | 1986-06-13 | 372.88 |
| 5 | 2446971 | 1987-06-24 | 372.42 |
| 6 | 2447338 | 1988-06-25 | 372.84 |
| 7 | 2447708 | 1989-06-30 | 373.06 |
| 8 | 2448086 | 1990-07-13 | 373.4 |
| 9 | 2448459 | 1991-07-21 | 373.68 |
| 10 | 2448824 | 1992-07-20 | 373.79 |
| 11 | 2449208 | 1993-08-08 | 374.4 |
| 12 | 2449585 | 1994-08-20 | 374.56 |
| 13 | 2449960 | 1995-08-30 | 374.72 |
| 14 | 2450329 | 1996-09-02 | 374.99 |
| 15 | 2450701 | 1997-09-09 | 375.05 |
| 16 | 2451082 | 1998-09-25 | 374.89 |
| 17 | 2451454 | 1999-10-02 | 374.89 |
| 18 | 2451833 | 2000-10-15 | 375.12 |
| 19 | 2452207 | 2001-10-24 | 375.55 |
| 20 | 2452579 | 2002-10-31 | 375.52 |
| 21 | 2452960 | 2003-11-16 | 375.74 |
| 22 | 2453330 | 2004-11-20 | 376.72 |
| 23 | 2453707 | 2005-12-02 | 376.95 |
| 24 | 2454086 | 2006-12-16 | 377.92 |
| 25 | 2454458 | 2007-12-23 | 378.37 |
| 26 | 2454843 | 2009-01-11 | 378.6 |
| 27 | 2455231 | 2010-02-03 | 379.12 |
| 28 | 2455598 | 2011-02-05 | 379.24 |
| 29 | 2455988 | 2012-03-01 | 378.89 |
| 30 | 2456359 | 2013-03-07 | 378.56 |
| 31 | 2456738 | 2014-03-21 | 377.84 |
| 32 | 2457119 | 2015-04-06 | 377.51 |
| 33 | 2457498 | 2016-04-19 | 377.93 |
| 34 | 2457869 | 2017-04-25 | 377.81 |
| 35 | 2458247 | 2018-05-08 | 378.1 |
| 36 | 2458624 | 2019-05-20 | 378.05 |
| 37 | 2459004 | 2020-06-03 | 378.05 |
| 38 | 2459387 | 2021-06-21 | 378.46 |
| 39 | 2459766 | 2022-07-05 | 379.57 |
| 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. |