| E | O (JD) | O (dat) | Period |
| -168 | 2393296 | 1840-07-09 | 313.4 |
| -161 | 2395481 | 1846-07-03 | 312.52 |
| -149 | 2399262 | 1856-11-08 | 311.87 |
| -148 | 2399562 | 1857-09-04 | 311.25 |
| -147 | 2399889 | 1858-07-28 | 310.74 |
| -146 | 2400166 | 1859-05-01 | 310.28 |
| -143 | 2401078 | 1861-10-29 | 307.81 |
| -142 | 2401382 | 1862-08-29 | 301.14 |
| -141 | 2401678 | 1863-06-21 | 300.67 |
| -140 | 2401983 | 1864-04-21 | 299.72 |
| -139 | 2402286 | 1865-02-18 | 300.94 |
| -138 | 2402572 | 1865-12-01 | 300.78 |
| -137 | 2402879 | 1866-10-04 | 301.08 |
| -136 | 2403179 | 1867-07-31 | 302.02 |
| -135 | 2403471 | 1868-05-18 | 303.08 |
| -134 | 2403795 | 1869-04-07 | 304.6 |
| -133 | 2404092 | 1870-01-29 | 307.76 |
| -132 | 2404392 | 1870-11-25 | 309.07 |
| -131 | 2404704 | 1871-10-03 | 310.28 |
| -130 | 2405016 | 1872-08-10 | 310.95 |
| -128 | 2405630 | 1874-04-16 | 311.06 |
| -125 | 2406584 | 1876-11-25 | 311.76 |
| -124 | 2406890 | 1877-09-27 | 312.19 |
| -123 | 2407205 | 1878-08-08 | 311.89 |
| -122 | 2407511 | 1879-06-10 | 311.72 |
| -121 | 2407821 | 1880-04-15 | 311.94 |
| -120 | 2408136 | 1881-02-24 | 311.52 |
| -119 | 2408450 | 1882-01-04 | 311.1 |
| -118 | 2408750 | 1882-10-31 | 310.74 |
| -117 | 2409066 | 1883-09-12 | 310.6 |
| -116 | 2409388 | 1884-07-30 | 310.75 |
| -115 | 2409701 | 1885-06-08 | 310.51 |
| -112 | 2410616 | 1887-12-10 | 310.27 |
| -111 | 2410928 | 1888-10-17 | 310.08 |
| -110 | 2411238 | 1889-08-23 | 309.57 |
| -109 | 2411560 | 1890-07-11 | 309.36 |
| -107 | 2412173 | 1892-03-15 | 309.54 |
| -106 | 2412479 | 1893-01-15 | 309.84 |
| -105 | 2412786 | 1893-11-18 | 309.11 |
| -104 | 2413097 | 1894-09-25 | 308.26 |
| -103 | 2413412 | 1895-08-06 | 307.21 |
| -102 | 2413720 | 1896-06-09 | 306.76 |
| -101 | 2414025 | 1897-04-10 | 305.81 |
| -100 | 2414325 | 1898-02-04 | 305.03 |
| -99 | 2414629 | 1898-12-05 | 303.22 |
| -98 | 2414933 | 1899-10-05 | 301.96 |
| -97 | 2415239 | 1900-08-07 | 301.52 |
| -96 | 2415535 | 1901-05-30 | 301.3 |
| -95 | 2415844 | 1902-04-04 | 301.12 |
| -94 | 2416126 | 1903-01-11 | 301.12 |
| -93 | 2416433 | 1903-11-14 | 301.36 |
| -92 | 2416740 | 1904-09-16 | 301.53 |
| -91 | 2417041 | 1905-07-14 | 302.18 |
| -90 | 2417340 | 1906-05-09 | 302.86 |
| -89 | 2417647 | 1907-03-12 | 303.57 |
| -88 | 2417952 | 1908-01-11 | 302.5 |
| -87 | 2418250 | 1908-11-04 | 301.88 |
| -86 | 2418557 | 1909-09-07 | 301.36 |
| -85 | 2418866 | 1910-07-13 | 300.79 |
| -84 | 2419162 | 1911-05-05 | 299.97 |
| -83 | 2419448 | 1912-02-15 | 299.85 |
| -82 | 2419754 | 1912-12-17 | 299.67 |
| -81 | 2420052 | 1913-10-11 | 300.18 |
| -80 | 2420352 | 1914-08-07 | 300.46 |
| -79 | 2420650 | 1915-06-01 | 301.5 |
| -78 | 2420959 | 1916-04-05 | 302.42 |
| -77 | 2421254 | 1917-01-25 | 302.25 |
| -76 | 2421572 | 1917-12-09 | 302.58 |
| -75 | 2421863 | 1918-09-26 | 302.75 |
| -74 | 2422170 | 1919-07-30 | 303.03 |
| -73 | 2422473 | 1920-05-28 | 303.65 |
| -72 | 2422768 | 1921-03-19 | 304.87 |
| -71 | 2423076 | 1922-01-21 | 305.34 |
| -70 | 2423379 | 1922-11-20 | 306.65 |
| -69 | 2423687 | 1923-09-24 | 307.2 |
| -68 | 2424004 | 1924-08-06 | 308.08 |
| -67 | 2424317 | 1925-06-15 | 308.89 |
| -66 | 2424618 | 1926-04-12 | 309.72 |
| -65 | 2424928 | 1927-02-16 | 310.43 |
| -64 | 2425233 | 1927-12-18 | 310.95 |
| -63 | 2425546 | 1928-10-26 | 311.92 |
| -62 | 2425856 | 1929-09-01 | 313.02 |
| -61 | 2426179 | 1930-07-21 | 314.68 |
| -60 | 2426489 | 1931-05-27 | 315.47 |
| -59 | 2426804 | 1932-04-06 | 315.81 |
| -58 | 2427129 | 1933-02-25 | 315.79 |
| -57 | 2427440 | 1934-01-02 | 315.25 |
| -56 | 2427764 | 1934-11-22 | 314.57 |
| -55 | 2428073 | 1935-09-27 | 314.46 |
| -54 | 2428382 | 1936-08-01 | 314.48 |
| -53 | 2428699 | 1937-06-14 | 314.6 |
| -52 | 2429005 | 1938-04-16 | 314.28 |
| -51 | 2429322 | 1939-02-27 | 314.44 |
| -50 | 2429640 | 1940-01-11 | 315.26 |
| -49 | 2429963 | 1940-11-29 | 315.49 |
| -48 | 2430282 | 1941-10-14 | 314.81 |
| -47 | 2430578 | 1942-08-06 | 314.41 |
| -46 | 2430905 | 1943-06-29 | 313.93 |
| -45 | 2431224 | 1944-05-13 | 313.24 |
| -44 | 2431532 | 1945-03-17 | 312.02 |
| -43 | 2431833 | 1946-01-12 | 311.36 |
| -42 | 2432149 | 1946-11-24 | 311.02 |
| -41 | 2432470 | 1947-10-11 | 310.18 |
| -40 | 2432778 | 1948-08-14 | 309.95 |
| -39 | 2433076 | 1949-06-08 | 309.64 |
| -38 | 2433388 | 1950-04-16 | 309.38 |
| -37 | 2433697 | 1951-02-19 | 308.64 |
| -36 | 2434014 | 1952-01-02 | 308.15 |
| -35 | 2434322 | 1952-11-05 | 308.74 |
| -34 | 2434621 | 1953-08-31 | 308.84 |
| -33 | 2434932 | 1954-07-08 | 309.04 |
| -32 | 2435240 | 1955-05-12 | 308.93 |
| -31 | 2435548 | 1956-03-15 | 308.45 |
| -30 | 2435866 | 1957-01-27 | 308.19 |
| -29 | 2436165 | 1957-11-22 | 308.21 |
| -28 | 2436487 | 1958-10-10 | 308.65 |
| -27 | 2436788 | 1959-08-07 | 308.52 |
| -26 | 2437089 | 1960-06-03 | 308 |
| -25 | 2437392 | 1961-04-02 | 307.21 |
| -24 | 2437704 | 1962-02-08 | 306.52 |
| -23 | 2438031 | 1963-01-01 | 305.72 |
| -22 | 2438327 | 1963-10-24 | 305.95 |
| -21 | 2438628 | 1964-08-20 | 306.18 |
| -20 | 2438930 | 1965-06-18 | 305.99 |
| -19 | 2439227 | 1966-04-11 | 305.01 |
| -18 | 2439538 | 1967-02-16 | 304.35 |
| -17 | 2439849 | 1967-12-24 | 304.99 |
| -16 | 2440160 | 1968-10-30 | 305.17 |
| -15 | 2440464 | 1969-08-30 | 305.38 |
| -14 | 2440758 | 1970-06-20 | 305.74 |
| -13 | 2441064 | 1971-04-22 | 305.33 |
| -12 | 2441372 | 1972-02-24 | 305.44 |
| -11 | 2441675 | 1972-12-23 | 306.15 |
| -10 | 2441984 | 1973-10-28 | 306.29 |
| -9 | 2442296 | 1974-09-05 | 306.78 |
| -8 | 2442596 | 1975-07-02 | 306.95 |
| -7 | 2442908 | 1976-05-09 | 306.95 |
| -6 | 2443222 | 1977-03-19 | 307.06 |
| -5 | 2443511 | 1978-01-02 | 307.14 |
| -4 | 2443824 | 1978-11-11 | 307.52 |
| -3 | 2444136 | 1979-09-19 | 307.79 |
| -2 | 2444441 | 1980-07-20 | 307.76 |
| -1 | 2444749 | 1981-05-24 | 308.15 |
| 0 | 2445060 | 1982-03-31 | 308.5 |
| 1 | 2445373 | 1983-02-07 | 307.91 |
| 2 | 2445674 | 1983-12-05 | 307.52 |
| 3 | 2445983 | 1984-10-09 | 307.01 |
| 4 | 2446295 | 1985-08-17 | 306.7 |
| 5 | 2446595 | 1986-06-13 | 306.27 |
| 6 | 2446902 | 1987-04-16 | 305.79 |
| 7 | 2447209 | 1988-02-17 | 305.68 |
| 8 | 2447509 | 1988-12-13 | 305.67 |
| 9 | 2447822 | 1989-10-22 | 306.05 |
| 10 | 2448126 | 1990-08-22 | 307.12 |
| 11 | 2448427 | 1991-06-19 | 307.56 |
| 12 | 2448733 | 1992-04-20 | 307.93 |
| 13 | 2449046 | 1993-02-27 | 307.72 |
| 14 | 2449358 | 1994-01-05 | 307.44 |
| 15 | 2449674 | 1994-11-17 | 307.5 |
| 16 | 2449976 | 1995-09-15 | 307.65 |
| 17 | 2450282 | 1996-07-17 | 307.27 |
| 18 | 2450577 | 1997-05-08 | 306.72 |
| 19 | 2450889 | 1998-03-16 | 306.41 |
| 20 | 2451197 | 1999-01-18 | 306.16 |
| 21 | 2451509 | 1999-11-26 | 306.37 |
| 22 | 2451813 | 2000-09-25 | 306.65 |
| 23 | 2452119 | 2001-07-28 | 306.85 |
| 24 | 2452426 | 2002-05-31 | 306.34 |
| 25 | 2452729 | 2003-03-30 | 306.1 |
| 26 | 2453034 | 2004-01-29 | 305.51 |
| 27 | 2453345 | 2004-12-05 | 305.15 |
| 28 | 2453650 | 2005-10-06 | 304.68 |
| 29 | 2453954 | 2006-08-06 | 303.66 |
| 30 | 2454261 | 2007-06-09 | 302.93 |
| 31 | 2454558 | 2008-04-01 | 302.23 |
| 32 | 2454861 | 2009-01-29 | 301.71 |
| 33 | 2455164 | 2009-11-28 | 302.02 |
| 34 | 2455455 | 2010-09-15 | 302.73 |
| 35 | 2455760 | 2011-07-17 | 303.37 |
| 36 | 2456064 | 2012-05-16 | 304.68 |
| 37 | 2456369 | 2013-03-17 | 305.59 |
| 38 | 2456681 | 2014-01-23 | 306.68 |
| 39 | 2456991 | 2014-11-29 | 307.88 |
| 40 | 2457293 | 2015-09-27 | 308.78 |
| 41 | 2457607 | 2016-08-06 | 309.45 |
| 42 | 2457911 | 2017-06-06 | 310.15 |
| 43 | 2458222 | 2018-04-13 | 310.45 |
| 44 | 2458533 | 2019-02-18 | 310.81 |
| 45 | 2458851 | 2020-01-02 | 311.42 |
| 46 | 2459159 | 2020-11-05 | 311.6 |
| 47 | 2459475 | 2021-09-17 | 312.32 |
| 48 | 2459782 | 2022-07-21 | 312.4 |
| 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. |