| E | O (JD) | O (dat) | Period |
| -188 | 2399582 | 1857-09-24 | 279.38 |
| -185 | 2400388 | 1859-12-09 | 280.07 |
| -176 | 2402903 | 1866-10-28 | 280.58 |
| -172 | 2404018 | 1869-11-16 | 279.29 |
| -171 | 2404307 | 1870-09-01 | 279.34 |
| -167 | 2405440 | 1873-10-08 | 279.92 |
| -166 | 2405717 | 1874-07-12 | 280.26 |
| -155 | 2408787 | 1882-12-07 | 280.16 |
| -150 | 2410178 | 1886-09-28 | 279.59 |
| -146 | 2411308 | 1889-11-01 | 279.09 |
| -145 | 2411588 | 1890-08-08 | 279.14 |
| -141 | 2412706 | 1893-08-30 | 279.95 |
| -138 | 2413537 | 1895-12-09 | 280.14 |
| -137 | 2413807 | 1896-09-04 | 279.41 |
| -133 | 2414933 | 1899-10-05 | 279.06 |
| -132 | 2415230 | 1900-07-29 | 279.89 |
| -129 | 2416061 | 1902-11-07 | 281.54 |
| -128 | 2416335 | 1903-08-08 | 282.3 |
| -127 | 2416610 | 1904-05-09 | 281.05 |
| -125 | 2417190 | 1905-12-10 | 280.9 |
| -124 | 2417474 | 1906-09-20 | 282.94 |
| -123 | 2417759 | 1907-07-02 | 283 |
| -121 | 2418306 | 1908-12-30 | 281.63 |
| -120 | 2418603 | 1909-10-23 | 280 |
| -119 | 2418886 | 1910-08-02 | 278.78 |
| -117 | 2419436 | 1912-02-03 | 278.76 |
| -116 | 2419715 | 1912-11-08 | 278.5 |
| -115 | 2419989 | 1913-08-09 | 277.19 |
| -114 | 2420262 | 1914-05-09 | 277 |
| -113 | 2420542 | 1915-02-13 | 277.36 |
| -112 | 2420823 | 1915-11-21 | 278.14 |
| -111 | 2421101 | 1916-08-25 | 278.64 |
| -110 | 2421376 | 1917-05-27 | 279.43 |
| -109 | 2421658 | 1918-03-05 | 279.53 |
| -108 | 2421940 | 1918-12-12 | 278.75 |
| -107 | 2422212 | 1919-09-10 | 279.37 |
| -106 | 2422504 | 1920-06-28 | 279.47 |
| -104 | 2423054 | 1921-12-30 | 278.89 |
| -103 | 2423330 | 1922-10-02 | 279.44 |
| -102 | 2423617 | 1923-07-16 | 280 |
| -100 | 2424168 | 1925-01-17 | 280.5 |
| -99 | 2424450 | 1925-10-26 | 280 |
| -98 | 2424732 | 1926-08-04 | 278.83 |
| -97 | 2425024 | 1927-05-23 | 278.74 |
| -95 | 2425583 | 1928-12-02 | 278.78 |
| -91 | 2426681 | 1931-12-05 | 278.46 |
| -90 | 2426958 | 1932-09-07 | 277.87 |
| -89 | 2427238 | 1933-06-14 | 277.17 |
| -87 | 2427792 | 1934-12-20 | 277.68 |
| -86 | 2428073 | 1935-09-27 | 278.88 |
| -85 | 2428352 | 1936-07-02 | 278.38 |
| -84 | 2428630 | 1937-04-06 | 277.67 |
| -83 | 2428910 | 1938-01-11 | 278.5 |
| -82 | 2429191 | 1938-10-19 | 278.5 |
| -81 | 2429459 | 1939-07-14 | 277.79 |
| -80 | 2429736 | 1940-04-16 | 277.93 |
| -79 | 2430028 | 1941-02-02 | 278.21 |
| -78 | 2430296 | 1941-10-28 | 278.5 |
| -77 | 2430575 | 1942-08-03 | 278.71 |
| -76 | 2430856 | 1943-05-11 | 278.14 |
| -75 | 2431140 | 1944-02-19 | 278.36 |
| -74 | 2431409 | 1944-11-14 | 278.79 |
| -73 | 2431688 | 1945-08-20 | 278.5 |
| -72 | 2431970 | 1946-05-29 | 278.29 |
| -71 | 2432251 | 1947-03-06 | 278.86 |
| -70 | 2432523 | 1947-12-03 | 280 |
| -69 | 2432807 | 1948-09-12 | 279.93 |
| -68 | 2433085 | 1949-06-17 | 279.29 |
| -67 | 2433368 | 1950-03-27 | 279.36 |
| -66 | 2433649 | 1951-01-02 | 279.21 |
| -65 | 2433928 | 1951-10-08 | 278.57 |
| -64 | 2434203 | 1952-07-09 | 278.71 |
| -63 | 2434482 | 1953-04-14 | 278.93 |
| -62 | 2434757 | 1954-01-14 | 278.5 |
| -61 | 2435035 | 1954-10-19 | 278.07 |
| -60 | 2435320 | 1955-07-31 | 278.29 |
| -59 | 2435602 | 1956-05-08 | 278.14 |
| -58 | 2435874 | 1957-02-04 | 278.43 |
| -57 | 2436150 | 1957-11-07 | 278.79 |
| -56 | 2436431 | 1958-08-15 | 278.07 |
| -55 | 2436702 | 1959-05-13 | 278.36 |
| -54 | 2436988 | 1960-02-23 | 279.14 |
| -53 | 2437270 | 1960-12-01 | 278.86 |
| -52 | 2437545 | 1961-09-02 | 279.36 |
| -51 | 2437828 | 1962-06-12 | 279.86 |
| -50 | 2438104 | 1963-03-15 | 279.86 |
| -49 | 2438381 | 1963-12-17 | 280.14 |
| -48 | 2438663 | 1964-09-24 | 280.36 |
| -47 | 2438945 | 1965-07-03 | 280.64 |
| -46 | 2439231 | 1966-04-15 | 281.14 |
| -45 | 2439506 | 1967-01-15 | 281.14 |
| -44 | 2439792 | 1967-10-28 | 280.14 |
| -43 | 2440069 | 1968-07-31 | 278.64 |
| -42 | 2440352 | 1969-05-10 | 277.71 |
| -41 | 2440628 | 1970-02-10 | 276.79 |
| -40 | 2440902 | 1970-11-11 | 276.21 |
| -39 | 2441175 | 1971-08-11 | 276.71 |
| -38 | 2441450 | 1972-05-12 | 276.36 |
| -37 | 2441723 | 1973-02-09 | 276.21 |
| -36 | 2442005 | 1973-11-18 | 277 |
| -35 | 2442290 | 1974-08-30 | 277.79 |
| -34 | 2442559 | 1975-05-26 | 278.43 |
| -33 | 2442838 | 1976-02-29 | 278.5 |
| -32 | 2443117 | 1976-12-04 | 277.79 |
| -31 | 2443397 | 1977-09-10 | 277.93 |
| -30 | 2443674 | 1978-06-14 | 278.64 |
| -29 | 2443953 | 1979-03-20 | 278.93 |
| -28 | 2444231 | 1979-12-23 | 279.93 |
| -27 | 2444509 | 1980-09-26 | 280.36 |
| -26 | 2444789 | 1981-07-03 | 280.14 |
| -25 | 2445071 | 1982-04-11 | 279.71 |
| -24 | 2445362 | 1983-01-27 | 278.93 |
| -23 | 2445634 | 1983-10-26 | 279.43 |
| -22 | 2445915 | 1984-08-02 | 279.93 |
| -21 | 2446185 | 1985-04-29 | 278.79 |
| -20 | 2446460 | 1986-01-29 | 278.14 |
| -19 | 2446750 | 1986-11-15 | 277.86 |
| -18 | 2447029 | 1987-08-21 | 277.93 |
| -17 | 2447307 | 1988-05-25 | 279.43 |
| -16 | 2447583 | 1989-02-25 | 278.93 |
| -15 | 2447856 | 1989-11-25 | 278.64 |
| -14 | 2448135 | 1990-08-31 | 279.36 |
| -13 | 2448422 | 1991-06-14 | 280 |
| -12 | 2448693 | 1992-03-11 | 280.86 |
| -11 | 2448987 | 1992-12-30 | 281.71 |
| -10 | 2449260 | 1993-09-29 | 283.36 |
| -9 | 2449550 | 1994-07-16 | 285.21 |
| -8 | 2449821 | 1995-04-13 | 285.57 |
| -7 | 2450114 | 1996-01-31 | 285.71 |
| -6 | 2450410 | 1996-11-22 | 286.07 |
| -5 | 2450698 | 1997-09-06 | 286.36 |
| -4 | 2450980 | 1998-06-15 | 286.07 |
| -3 | 2451267 | 1999-03-29 | 283.5 |
| -2 | 2451548 | 2000-01-04 | 281.79 |
| -1 | 2451832 | 2000-10-14 | 281.43 |
| 0 | 2452108 | 2001-07-17 | 280.57 |
| 1 | 2452385 | 2002-04-20 | 279.5 |
| 2 | 2452668 | 2003-01-28 | 279.21 |
| 3 | 2452950 | 2003-11-06 | 278.57 |
| 4 | 2453225 | 2004-08-07 | 278.5 |
| 5 | 2453503 | 2005-05-12 | 278.5 |
| 6 | 2453786 | 2006-02-19 | 277.64 |
| 7 | 2454054 | 2006-11-14 | 277.57 |
| 8 | 2454338 | 2007-08-25 | 277.79 |
| 9 | 2454614 | 2008-05-27 | 278.5 |
| 10 | 2454891 | 2009-02-28 | 279.79 |
| 11 | 2455170 | 2009-12-04 | 279.57 |
| 12 | 2455447 | 2010-09-07 | 278.93 |
| 13 | 2455741 | 2011-06-28 | 279.64 |
| 14 | 2456016 | 2012-03-29 | 279.5 |
| 15 | 2456290 | 2012-12-28 | 278.86 |
| 16 | 2456567 | 2013-10-01 | 278.57 |
| 17 | 2456853 | 2014-07-14 | 278.07 |
| 18 | 2457121 | 2015-04-08 | 278.64 |
| 19 | 2457400 | 2016-01-12 | 279.14 |
| 20 | 2457688 | 2016-10-26 | 278.14 |
| 21 | 2457962 | 2017-07-27 | 278.14 |
| 22 | 2458245 | 2018-05-06 | 279 |
| 23 | 2458520 | 2019-02-05 | 278.64 |
| 24 | 2458794 | 2019-11-06 | 279.14 |
| 25 | 2459074 | 2020-08-12 | 279.19 |
| 26 | 2459353 | 2021-05-18 | 278.09 |
| 27 | 2459636 | 2022-02-25 | 279.75 |
| 28 | 2459922 | 2022-12-08 | 280.9 |
| 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. |