| E | O (JD) | O (dat) | Period |
| -156 | 2398008 | 1853-06-03 | 301.91 |
| -152 | 2399209 | 1856-09-16 | 302.7 |
| -151 | 2399511 | 1857-07-15 | 302.45 |
| -150 | 2399809 | 1858-05-09 | 302.35 |
| -145 | 2401329 | 1862-07-07 | 302.34 |
| -144 | 2401626 | 1863-04-30 | 302.21 |
| -139 | 2403153 | 1867-07-05 | 302.6 |
| -138 | 2403440 | 1868-04-17 | 302.57 |
| -137 | 2403743 | 1869-02-14 | 302.67 |
| -135 | 2404350 | 1870-10-14 | 302.85 |
| -134 | 2404645 | 1871-08-05 | 302.33 |
| -128 | 2406476 | 1876-08-09 | 302.14 |
| -127 | 2406769 | 1877-05-29 | 302.18 |
| -126 | 2407078 | 1878-04-03 | 302.13 |
| -111 | 2411625 | 1890-09-14 | 301.99 |
| -105 | 2413404 | 1895-07-29 | 301.95 |
| -104 | 2413712 | 1896-06-01 | 301.78 |
| -103 | 2414018 | 1897-04-03 | 301.82 |
| -100 | 2414926 | 1899-09-28 | 301.7 |
| -99 | 2415218 | 1900-07-17 | 301.81 |
| -98 | 2415530 | 1901-05-25 | 302.77 |
| -97 | 2415834 | 1902-03-25 | 302.49 |
| -94 | 2416736 | 1904-09-12 | 302.2 |
| -93 | 2417042 | 1905-07-15 | 302.84 |
| -92 | 2417352 | 1906-05-21 | 303.32 |
| -91 | 2417641 | 1907-03-06 | 302.96 |
| -90 | 2417946 | 1908-01-05 | 302.6 |
| -89 | 2418243 | 1908-10-28 | 302.53 |
| -88 | 2418570 | 1909-09-20 | 302.05 |
| -87 | 2418868 | 1910-07-15 | 301.85 |
| -86 | 2419161 | 1911-05-04 | 302.21 |
| -85 | 2419454 | 1912-02-21 | 302.08 |
| -84 | 2419761 | 1912-12-24 | 301.91 |
| -83 | 2420061 | 1913-10-20 | 301.3 |
| -82 | 2420365 | 1914-08-20 | 301.5 |
| -81 | 2420670 | 1915-06-21 | 301.65 |
| -80 | 2420976 | 1916-04-22 | 301.19 |
| -79 | 2421276 | 1917-02-16 | 301.05 |
| -78 | 2421576 | 1917-12-13 | 301.09 |
| -77 | 2421868 | 1918-10-01 | 301.09 |
| -76 | 2422169 | 1919-07-29 | 300.92 |
| -75 | 2422464 | 1920-05-19 | 301.02 |
| -74 | 2422780 | 1921-03-31 | 301.74 |
| -73 | 2423081 | 1922-01-26 | 302.22 |
| -72 | 2423384 | 1922-11-25 | 302.71 |
| -71 | 2423680 | 1923-09-17 | 303.11 |
| -70 | 2423983 | 1924-07-16 | 303.01 |
| -69 | 2424292 | 1925-05-21 | 302.86 |
| -68 | 2424590 | 1926-03-15 | 302.99 |
| -67 | 2424893 | 1927-01-12 | 302.71 |
| -66 | 2425204 | 1927-11-19 | 302.36 |
| -65 | 2425499 | 1928-09-09 | 301.84 |
| -64 | 2425810 | 1929-07-17 | 301.53 |
| -63 | 2426106 | 1930-05-09 | 301.96 |
| -62 | 2426401 | 1931-02-28 | 301.48 |
| -61 | 2426700 | 1931-12-24 | 301.72 |
| -60 | 2427004 | 1932-10-23 | 302.17 |
| -59 | 2427310 | 1933-08-25 | 302.23 |
| -58 | 2427621 | 1934-07-02 | 303.11 |
| -57 | 2427909 | 1935-04-16 | 303.78 |
| -56 | 2428225 | 1936-02-26 | 303.93 |
| -55 | 2428523 | 1936-12-20 | 303.75 |
| -54 | 2428824 | 1937-10-17 | 303.69 |
| -53 | 2429134 | 1938-08-23 | 303.92 |
| -52 | 2429439 | 1939-06-24 | 304.37 |
| -51 | 2429740 | 1940-04-20 | 303.75 |
| -50 | 2430042 | 1941-02-16 | 303.82 |
| -49 | 2430348 | 1941-12-19 | 304.27 |
| -48 | 2430656 | 1942-10-23 | 304.39 |
| -47 | 2430957 | 1943-08-20 | 304.09 |
| -46 | 2431255 | 1944-06-13 | 304.27 |
| -45 | 2431560 | 1945-04-14 | 304.55 |
| -44 | 2431878 | 1946-02-26 | 304.58 |
| -42 | 2432484 | 1947-10-25 | 304.32 |
| -41 | 2432775 | 1948-08-11 | 304.16 |
| -40 | 2433087 | 1949-06-19 | 304.14 |
| -39 | 2433397 | 1950-04-25 | 303.79 |
| -38 | 2433699 | 1951-02-21 | 303.18 |
| -37 | 2433995 | 1951-12-14 | 303.23 |
| -36 | 2434296 | 1952-10-10 | 303.14 |
| -35 | 2434606 | 1953-08-16 | 302.31 |
| -34 | 2434910 | 1954-06-16 | 301.63 |
| -33 | 2435209 | 1955-04-11 | 301.17 |
| -32 | 2435511 | 1956-02-07 | 301.31 |
| -31 | 2435811 | 1956-12-03 | 301.25 |
| -30 | 2436111 | 1957-09-29 | 300.94 |
| -29 | 2436407 | 1958-07-22 | 301.24 |
| -28 | 2436704 | 1959-05-15 | 301.73 |
| -27 | 2437016 | 1960-03-22 | 302.37 |
| -26 | 2437320 | 1961-01-20 | 302.66 |
| -25 | 2437618 | 1961-11-14 | 303.05 |
| -24 | 2437924 | 1962-09-16 | 303.22 |
| -23 | 2438227 | 1963-07-16 | 303.07 |
| -22 | 2438535 | 1964-05-19 | 302.47 |
| -21 | 2438830 | 1965-03-10 | 302.16 |
| -20 | 2439136 | 1966-01-10 | 302.05 |
| -19 | 2439436 | 1966-11-06 | 301.73 |
| -18 | 2439739 | 1967-09-05 | 301.99 |
| -17 | 2440039 | 1968-07-01 | 302.73 |
| -16 | 2440338 | 1969-04-26 | 303.62 |
| -15 | 2440642 | 1970-02-24 | 304.46 |
| -14 | 2440944 | 1970-12-23 | 305.16 |
| -13 | 2441255 | 1971-10-30 | 305.4 |
| -12 | 2441568 | 1972-09-07 | 306.03 |
| -11 | 2441870 | 1973-07-06 | 306.69 |
| -10 | 2442182 | 1974-05-14 | 306.68 |
| -9 | 2442482 | 1975-03-10 | 306.49 |
| -8 | 2442781 | 1976-01-03 | 305.95 |
| -7 | 2443095 | 1976-11-12 | 305.27 |
| -6 | 2443407 | 1977-09-20 | 304.99 |
| -5 | 2443707 | 1978-07-17 | 304.72 |
| -4 | 2444012 | 1979-05-18 | 305.26 |
| -3 | 2444316 | 1980-03-17 | 305.04 |
| -2 | 2444614 | 1981-01-09 | 304.3 |
| -1 | 2444919 | 1981-11-10 | 303.81 |
| 0 | 2445227 | 1982-09-14 | 303.49 |
| 1 | 2445542 | 1983-07-26 | 302.91 |
| 2 | 2445837 | 1984-05-16 | 302.65 |
| 3 | 2446138 | 1985-03-13 | 302.52 |
| 4 | 2446438 | 1986-01-07 | 301.35 |
| 5 | 2446736 | 1986-11-01 | 301.06 |
| 6 | 2447036 | 1987-08-28 | 301.02 |
| 7 | 2447343 | 1988-06-30 | 301.15 |
| 8 | 2447647 | 1989-04-30 | 300.69 |
| 9 | 2447933 | 1990-02-10 | 300.38 |
| 10 | 2448250 | 1990-12-24 | 300.62 |
| 11 | 2448552 | 1991-10-22 | 300.77 |
| 12 | 2448843 | 1992-08-08 | 301 |
| 13 | 2449136 | 1993-05-28 | 301.68 |
| 14 | 2449438 | 1994-03-26 | 302.57 |
| 15 | 2449750 | 1995-02-01 | 302.55 |
| 16 | 2450053 | 1995-12-01 | 303.73 |
| 17 | 2450358 | 1996-10-01 | 304.76 |
| 18 | 2450664 | 1997-08-03 | 305.07 |
| 19 | 2450968 | 1998-06-03 | 305.13 |
| 20 | 2451269 | 1999-03-31 | 305.21 |
| 21 | 2451582 | 2000-02-07 | 305.29 |
| 22 | 2451883 | 2000-12-04 | 305.36 |
| 23 | 2452184 | 2001-10-01 | 305.36 |
| 24 | 2452495 | 2002-08-08 | 305.67 |
| 25 | 2452805 | 2003-06-14 | 305.95 |
| 26 | 2453104 | 2004-04-08 | 305.84 |
| 27 | 2453411 | 2005-02-09 | 305.95 |
| 28 | 2453715 | 2005-12-10 | 306.02 |
| 29 | 2454026 | 2006-10-17 | 305.95 |
| 30 | 2454333 | 2007-08-20 | 305.33 |
| 31 | 2454636 | 2008-06-18 | 305.15 |
| 32 | 2454939 | 2009-04-17 | 305.15 |
| 33 | 2455248 | 2010-02-20 | 304.89 |
| 34 | 2455557 | 2010-12-26 | 304.11 |
| 35 | 2455846 | 2011-10-11 | 303.04 |
| 36 | 2456154 | 2012-08-14 | 302.42 |
| 37 | 2456469 | 2013-06-25 | 301.72 |
| 38 | 2456768 | 2014-04-20 | 301.42 |
| 39 | 2457063 | 2015-02-09 | 301.24 |
| 40 | 2457353 | 2015-11-26 | 301.45 |
| 41 | 2457660 | 2016-09-28 | 301.09 |
| 42 | 2457960 | 2017-07-25 | 300.78 |
| 43 | 2458270 | 2018-05-31 | 301.1 |
| 44 | 2458568 | 2019-03-25 | 301.61 |
| 45 | 2458870 | 2020-01-21 | 302 |
| 46 | 2459173 | 2020-11-19 | 301.48 |
| 47 | 2459470 | 2021-09-12 | 301.14 |
| 48 | 2459769 | 2022-07-08 | 300.11 |
| 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. |