| E | O (JD) | O (dat) | Period |
| -160 | 2400792 | 1861-01-16 | 273.83 |
| -159 | 2401060 | 1861-10-11 | 273.93 |
| -157 | 2401620 | 1863-04-24 | 273.71 |
| -156 | 2401894 | 1864-01-23 | 273.38 |
| -155 | 2402158 | 1864-10-13 | 273.17 |
| -154 | 2402431 | 1865-07-13 | 273.09 |
| -153 | 2402710 | 1866-04-18 | 273.03 |
| -152 | 2402980 | 1867-01-13 | 272.43 |
| -150 | 2403524 | 1868-07-10 | 272.53 |
| -149 | 2403796 | 1869-04-08 | 272.48 |
| -148 | 2404070 | 1870-01-07 | 272.27 |
| -147 | 2404346 | 1870-10-10 | 272.16 |
| -146 | 2404613 | 1871-07-04 | 271.74 |
| -145 | 2404887 | 1872-04-03 | 271.83 |
| -144 | 2405153 | 1872-12-25 | 272.09 |
| -143 | 2405430 | 1873-09-28 | 271.96 |
| -142 | 2405705 | 1874-06-30 | 271.48 |
| -141 | 2405963 | 1875-03-15 | 271.9 |
| -140 | 2406248 | 1875-12-25 | 271.99 |
| -139 | 2406524 | 1876-09-26 | 272.16 |
| -138 | 2406789 | 1877-06-18 | 271.81 |
| -137 | 2407051 | 1878-03-07 | 271.98 |
| -135 | 2407607 | 1879-09-14 | 271.74 |
| -134 | 2407878 | 1880-06-11 | 270.7 |
| -133 | 2408150 | 1881-03-10 | 270.63 |
| -132 | 2408416 | 1881-12-01 | 270.87 |
| -131 | 2408695 | 1882-09-06 | 270.8 |
| -130 | 2408953 | 1883-05-22 | 270.21 |
| -128 | 2409490 | 1884-11-09 | 269.78 |
| -127 | 2409769 | 1885-08-15 | 269.47 |
| -126 | 2410042 | 1886-05-15 | 269 |
| -124 | 2410582 | 1887-11-06 | 268.64 |
| -123 | 2410850 | 1888-07-31 | 268.28 |
| -121 | 2411379 | 1890-01-11 | 267.37 |
| -120 | 2411648 | 1890-10-07 | 266.39 |
| -119 | 2411908 | 1891-06-24 | 265.59 |
| -118 | 2412182 | 1892-03-24 | 265.21 |
| -117 | 2412439 | 1892-12-06 | 265.23 |
| -116 | 2412704 | 1893-08-28 | 266 |
| -115 | 2412970 | 1894-05-21 | 266.8 |
| -114 | 2413232 | 1895-02-07 | 267.17 |
| -113 | 2413505 | 1895-11-07 | 267.06 |
| -112 | 2413770 | 1896-07-29 | 267.48 |
| -111 | 2414049 | 1897-05-04 | 267.09 |
| -110 | 2414320 | 1898-01-30 | 267.67 |
| -109 | 2414576 | 1898-10-13 | 267.65 |
| -108 | 2414839 | 1899-07-03 | 267.71 |
| -107 | 2415108 | 1900-03-29 | 267.58 |
| -106 | 2415367 | 1900-12-13 | 267.73 |
| -105 | 2415656 | 1901-09-28 | 268.07 |
| -104 | 2415914 | 1902-06-13 | 268.98 |
| -103 | 2416190 | 1903-03-16 | 268.92 |
| -102 | 2416450 | 1903-12-01 | 268.59 |
| -101 | 2416727 | 1904-09-03 | 267.96 |
| -100 | 2416988 | 1905-05-22 | 266.65 |
| -99 | 2417263 | 1906-02-21 | 267.17 |
| -98 | 2417523 | 1906-11-08 | 266.84 |
| -97 | 2417791 | 1907-08-03 | 267.88 |
| -96 | 2418052 | 1908-04-20 | 268.37 |
| -95 | 2418315 | 1909-01-08 | 270.26 |
| -94 | 2418598 | 1909-10-18 | 271.1 |
| -93 | 2418858 | 1910-07-05 | 271.57 |
| -92 | 2419146 | 1911-04-19 | 271.71 |
| -91 | 2419413 | 1912-01-11 | 271.88 |
| -90 | 2419704 | 1912-10-28 | 272.39 |
| -89 | 2419963 | 1913-07-14 | 272.86 |
| -88 | 2420220 | 1914-03-28 | 274.2 |
| -87 | 2420492 | 1914-12-25 | 274.45 |
| -86 | 2420765 | 1915-09-24 | 275.25 |
| -85 | 2421054 | 1916-07-09 | 275.77 |
| -84 | 2421338 | 1917-04-19 | 277.18 |
| -83 | 2421622 | 1918-01-28 | 277.55 |
| -82 | 2421891 | 1918-10-24 | 277.01 |
| -81 | 2422164 | 1919-07-24 | 276.15 |
| -80 | 2422441 | 1920-04-26 | 274.9 |
| -79 | 2422717 | 1921-01-27 | 274.51 |
| -78 | 2422986 | 1921-10-23 | 274.45 |
| -77 | 2423262 | 1922-07-26 | 275.24 |
| -76 | 2423537 | 1923-04-27 | 275.59 |
| -75 | 2423810 | 1924-01-25 | 275.75 |
| -74 | 2424091 | 1924-11-01 | 275.77 |
| -73 | 2424365 | 1925-08-02 | 275.54 |
| -72 | 2424648 | 1926-05-12 | 274.68 |
| -71 | 2424921 | 1927-02-09 | 274.02 |
| -70 | 2425195 | 1927-11-10 | 273.45 |
| -69 | 2425466 | 1928-08-07 | 272.4 |
| -68 | 2425734 | 1929-05-02 | 271.71 |
| -67 | 2426001 | 1930-01-24 | 270.98 |
| -66 | 2426277 | 1930-10-27 | 270.61 |
| -65 | 2426552 | 1931-07-29 | 270.1 |
| -64 | 2426817 | 1932-04-19 | 269.99 |
| -63 | 2427089 | 1933-01-16 | 270.16 |
| -62 | 2427359 | 1933-10-13 | 269.78 |
| -61 | 2427626 | 1934-07-07 | 269.76 |
| -60 | 2427891 | 1935-03-29 | 269.84 |
| -59 | 2428165 | 1935-12-28 | 270.21 |
| -58 | 2428440 | 1936-09-28 | 270.46 |
| -57 | 2428701 | 1937-06-16 | 270.82 |
| -56 | 2428982 | 1938-03-24 | 270.9 |
| -55 | 2429249 | 1938-12-16 | 270.77 |
| -54 | 2429520 | 1939-09-13 | 270.4 |
| -53 | 2429793 | 1940-06-12 | 269.9 |
| -52 | 2430064 | 1941-03-10 | 270.33 |
| -51 | 2430329 | 1941-11-30 | 270.06 |
| -50 | 2430598 | 1942-08-26 | 270.19 |
| -49 | 2430869 | 1943-05-24 | 269.93 |
| -48 | 2431133 | 1944-02-12 | 269.6 |
| -47 | 2431417 | 1944-11-22 | 269.4 |
| -46 | 2431684 | 1945-08-16 | 269.13 |
| -45 | 2431952 | 1946-05-11 | 268.55 |
| -44 | 2432217 | 1947-01-31 | 267.89 |
| -43 | 2432484 | 1947-10-25 | 267.45 |
| -42 | 2432752 | 1948-07-19 | 266.65 |
| -41 | 2433017 | 1949-04-10 | 266.41 |
| -40 | 2433283 | 1950-01-01 | 267.47 |
| -39 | 2433549 | 1950-09-24 | 268.6 |
| -38 | 2433819 | 1951-06-21 | 269.33 |
| -37 | 2434084 | 1952-03-12 | 269.9 |
| -36 | 2434346 | 1952-11-29 | 271.05 |
| -35 | 2434640 | 1953-09-19 | 271.6 |
| -34 | 2434911 | 1954-06-17 | 272.08 |
| -33 | 2435176 | 1955-03-09 | 272.6 |
| -32 | 2435444 | 1955-12-02 | 273.54 |
| -31 | 2435727 | 1956-09-10 | 273.63 |
| -30 | 2435991 | 1957-06-01 | 273.21 |
| -29 | 2436265 | 1958-03-02 | 273.35 |
| -28 | 2436543 | 1958-12-05 | 273.22 |
| -27 | 2436827 | 1959-09-15 | 273.19 |
| -26 | 2437092 | 1960-06-06 | 272.46 |
| -25 | 2437368 | 1961-03-09 | 271.85 |
| -24 | 2437632 | 1961-11-28 | 271.03 |
| -23 | 2437899 | 1962-08-22 | 270.36 |
| -22 | 2438181 | 1963-05-31 | 269.9 |
| -21 | 2438445 | 1964-02-19 | 270.09 |
| -20 | 2438708 | 1964-11-08 | 270.3 |
| -19 | 2438983 | 1965-08-10 | 270.48 |
| -18 | 2439256 | 1966-05-10 | 270.45 |
| -17 | 2439525 | 1967-02-03 | 270.49 |
| -16 | 2439795 | 1967-10-31 | 270.46 |
| -15 | 2440071 | 1968-08-02 | 269.98 |
| -14 | 2440335 | 1969-04-23 | 269.07 |
| -13 | 2440607 | 1970-01-20 | 268.9 |
| -12 | 2440883 | 1970-10-23 | 269.32 |
| -11 | 2441140 | 1971-07-07 | 269.78 |
| -10 | 2441405 | 1972-03-28 | 269.95 |
| -9 | 2441672 | 1972-12-20 | 270.23 |
| -8 | 2441951 | 1973-09-25 | 270.02 |
| -7 | 2442230 | 1974-07-01 | 270.29 |
| -6 | 2442503 | 1975-03-31 | 271.26 |
| -5 | 2442768 | 1975-12-21 | 271.56 |
| -4 | 2443034 | 1976-09-12 | 271.73 |
| -3 | 2443299 | 1977-06-04 | 271.72 |
| -2 | 2443576 | 1978-03-08 | 271.89 |
| -1 | 2443854 | 1978-12-11 | 272.78 |
| 0 | 2444125 | 1979-09-08 | 273.46 |
| 1 | 2444401 | 1980-06-10 | 274.1 |
| 2 | 2444676 | 1981-03-12 | 273.94 |
| 3 | 2444946 | 1981-12-07 | 272.94 |
| 4 | 2445226 | 1982-09-13 | 272.13 |
| 5 | 2445493 | 1983-06-07 | 271.79 |
| 6 | 2445772 | 1984-03-12 | 271.61 |
| 7 | 2446036 | 1984-12-01 | 271.89 |
| 8 | 2446300 | 1985-08-22 | 272.33 |
| 9 | 2446572 | 1986-05-21 | 272.79 |
| 10 | 2446848 | 1987-02-21 | 273.26 |
| 11 | 2447125 | 1987-11-25 | 273.94 |
| 12 | 2447404 | 1988-08-30 | 275.23 |
| 13 | 2447678 | 1989-05-31 | 275.75 |
| 14 | 2447955 | 1990-03-04 | 275.7 |
| 15 | 2448221 | 1990-11-25 | 275.5 |
| 16 | 2448504 | 1991-09-04 | 275.02 |
| 17 | 2448785 | 1992-06-11 | 274.87 |
| 18 | 2449054 | 1993-03-07 | 274.65 |
| 19 | 2449328 | 1993-12-06 | 274.38 |
| 20 | 2449604 | 1994-09-08 | 273.93 |
| 21 | 2449873 | 1995-06-04 | 273.09 |
| 22 | 2450153 | 1996-03-10 | 272.82 |
| 23 | 2450422 | 1996-12-04 | 273.2 |
| 24 | 2450696 | 1997-09-04 | 273.24 |
| 25 | 2450963 | 1998-05-29 | 273.45 |
| 26 | 2451237 | 1999-02-27 | 273.85 |
| 27 | 2451513 | 1999-11-30 | 273.95 |
| 28 | 2451792 | 2000-09-04 | 274.27 |
| 29 | 2452063 | 2001-06-02 | 273.85 |
| 30 | 2452340 | 2002-03-06 | 273.23 |
| 31 | 2452615 | 2002-12-06 | 272.05 |
| 32 | 2452888 | 2003-09-05 | 271.35 |
| 33 | 2453160 | 2004-06-03 | 270.41 |
| 34 | 2453422 | 2005-02-20 | 269.77 |
| 35 | 2453689 | 2005-11-14 | 268.74 |
| 36 | 2453955 | 2006-08-07 | 268.04 |
| 37 | 2454235 | 2007-05-14 | 267.83 |
| 38 | 2454498 | 2008-02-01 | 267.3 |
| 39 | 2454767 | 2008-10-27 | 266.87 |
| 40 | 2455028 | 2009-07-15 | 266.35 |
| 41 | 2455296 | 2010-04-09 | 266.09 |
| 42 | 2455568 | 2011-01-06 | 265.94 |
| 43 | 2455824 | 2011-09-19 | 266.43 |
| 44 | 2456087 | 2012-06-08 | 266.94 |
| 45 | 2456356 | 2013-03-04 | 267.4 |
| 46 | 2456628 | 2013-12-01 | 267.15 |
| 47 | 2456899 | 2014-08-29 | 267.2 |
| 48 | 2457166 | 2015-05-23 | 267.32 |
| 49 | 2457437 | 2016-02-18 | 267.55 |
| 50 | 2457701 | 2016-11-08 | 267.45 |
| 51 | 2457959 | 2017-07-24 | 267.61 |
| 52 | 2458230 | 2018-04-21 | 267.77 |
| 53 | 2458492 | 2019-01-08 | 268.05 |
| 54 | 2458772 | 2019-10-15 | 268.28 |
| 55 | 2459039 | 2020-07-08 | 268.95 |
| 56 | 2459312 | 2021-04-07 | 269.73 |
| 57 | 2459577 | 2021-12-28 | 269.71 |
| 58 | 2459844 | 2022-09-21 | 269.94 |
| 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. |