| E | O (JD) | O (dat) | Period |
| -156 | 2406100 | 1875-07-30 | 231.68 |
| -148 | 2407950 | 1880-08-22 | 231.88 |
| -134 | 2411211 | 1889-07-27 | 232.04 |
| -131 | 2411896 | 1891-06-12 | 231.4 |
| -129 | 2412359 | 1892-09-17 | 231.24 |
| -126 | 2413060 | 1894-08-19 | 231.03 |
| -125 | 2413290 | 1895-04-06 | 230.46 |
| -124 | 2413498 | 1895-10-31 | 229.9 |
| -123 | 2413733 | 1896-06-22 | 227.43 |
| -122 | 2413976 | 1897-02-20 | 225.64 |
| -121 | 2414201 | 1897-10-03 | 227.65 |
| -120 | 2414422 | 1898-05-12 | 227.72 |
| -119 | 2414636 | 1898-12-12 | 225.72 |
| -118 | 2414873 | 1899-08-06 | 224.78 |
| -117 | 2415102 | 1900-03-23 | 225.5 |
| -116 | 2415317 | 1900-10-24 | 227.86 |
| -115 | 2415552 | 1901-06-16 | 229.57 |
| -114 | 2415772 | 1902-01-22 | 228.5 |
| -113 | 2416008 | 1902-09-15 | 228.85 |
| -112 | 2416240 | 1903-05-05 | 229.78 |
| -111 | 2416483 | 1904-01-03 | 229.36 |
| -110 | 2416691 | 1904-07-29 | 229.5 |
| -109 | 2416932 | 1905-03-27 | 228.86 |
| -108 | 2417154 | 1905-11-04 | 227.85 |
| -107 | 2417381 | 1906-06-19 | 228.33 |
| -106 | 2417612 | 1907-02-05 | 229 |
| -105 | 2417840 | 1907-09-21 | 229.32 |
| -104 | 2418073 | 1908-05-11 | 229.56 |
| -102 | 2418526 | 1909-08-07 | 229.5 |
| -101 | 2418761 | 1910-03-30 | 230 |
| -100 | 2418994 | 1910-11-18 | 230.5 |
| -99 | 2419214 | 1911-06-26 | 230.07 |
| -98 | 2419451 | 1912-02-18 | 229.5 |
| -97 | 2419681 | 1912-10-05 | 229.28 |
| -96 | 2419920 | 1913-06-01 | 230.15 |
| -95 | 2420130 | 1913-12-28 | 231.07 |
| -94 | 2420370 | 1914-08-25 | 230.94 |
| -93 | 2420595 | 1915-04-07 | 230.61 |
| -92 | 2420835 | 1915-12-03 | 231.44 |
| -91 | 2421065 | 1916-07-20 | 233.23 |
| -88 | 2421762 | 1918-06-17 | 232.67 |
| -87 | 2421990 | 1919-01-31 | 231.94 |
| -86 | 2422226 | 1919-09-24 | 231.83 |
| -85 | 2422472 | 1920-05-27 | 231.69 |
| -84 | 2422681 | 1920-12-22 | 232.36 |
| -83 | 2422924 | 1921-08-22 | 232.5 |
| -82 | 2423149 | 1922-04-04 | 229.92 |
| -81 | 2423385 | 1922-11-26 | 229.57 |
| -80 | 2423620 | 1923-07-19 | 231.5 |
| -79 | 2423851 | 1924-03-06 | 231.15 |
| -78 | 2424066 | 1924-10-07 | 229.92 |
| -77 | 2424301 | 1925-05-30 | 228.78 |
| -76 | 2424545 | 1926-01-29 | 228.72 |
| -75 | 2424764 | 1926-09-05 | 229.57 |
| -74 | 2424989 | 1927-04-18 | 230 |
| -73 | 2425219 | 1927-12-04 | 228.5 |
| -72 | 2425454 | 1928-07-26 | 228.92 |
| -71 | 2425677 | 1929-03-06 | 230.72 |
| -70 | 2425910 | 1929-10-25 | 230.72 |
| -69 | 2426135 | 1930-06-07 | 230.43 |
| -68 | 2426379 | 1931-02-06 | 230.64 |
| -67 | 2426604 | 1931-09-19 | 231.5 |
| -66 | 2426834 | 1932-05-06 | 232.07 |
| -65 | 2427065 | 1932-12-23 | 231.43 |
| -64 | 2427295 | 1933-08-10 | 230.72 |
| -63 | 2427533 | 1934-04-05 | 231.14 |
| -62 | 2427761 | 1934-11-19 | 231.64 |
| -61 | 2427993 | 1935-07-09 | 232.07 |
| -60 | 2428220 | 1936-02-21 | 231.65 |
| -59 | 2428454 | 1936-10-12 | 231.43 |
| -58 | 2428688 | 1937-06-03 | 231.85 |
| -57 | 2428921 | 1938-01-22 | 231.71 |
| -56 | 2429150 | 1938-09-08 | 231.07 |
| -55 | 2429384 | 1939-04-30 | 230.57 |
| -54 | 2429616 | 1939-12-18 | 230.65 |
| -53 | 2429841 | 1940-07-30 | 230.92 |
| -52 | 2430068 | 1941-03-14 | 230.21 |
| -51 | 2430302 | 1941-11-03 | 229.65 |
| -50 | 2430536 | 1942-06-25 | 230.07 |
| -49 | 2430768 | 1943-02-12 | 230.65 |
| -48 | 2430989 | 1943-09-21 | 230.57 |
| -47 | 2431226 | 1944-05-15 | 229.57 |
| -46 | 2431452 | 1944-12-27 | 229.36 |
| -45 | 2431686 | 1945-08-18 | 230.15 |
| -44 | 2431912 | 1946-04-01 | 229.65 |
| -43 | 2432140 | 1946-11-15 | 228.92 |
| -42 | 2432375 | 1947-07-08 | 229.35 |
| -41 | 2432604 | 1948-02-22 | 229.15 |
| -40 | 2432826 | 1948-10-01 | 229.29 |
| -39 | 2433057 | 1949-05-20 | 229.65 |
| -38 | 2433292 | 1950-01-10 | 229.28 |
| -37 | 2433514 | 1950-08-20 | 229.42 |
| -36 | 2433748 | 1951-04-11 | 229.43 |
| -35 | 2433982 | 1951-12-01 | 228.79 |
| -34 | 2434207 | 1952-07-13 | 228.93 |
| -33 | 2434435 | 1953-02-26 | 228.92 |
| -32 | 2434660 | 1953-10-09 | 228.28 |
| -31 | 2434892 | 1954-05-29 | 228.22 |
| -30 | 2435119 | 1955-01-11 | 228.43 |
| -29 | 2435348 | 1955-08-28 | 228.65 |
| -28 | 2435578 | 1956-04-14 | 229 |
| -27 | 2435806 | 1956-11-28 | 229 |
| -26 | 2436034 | 1957-07-14 | 229.43 |
| -25 | 2436262 | 1958-02-27 | 230.5 |
| -24 | 2436496 | 1958-10-19 | 230.57 |
| -23 | 2436721 | 1959-06-01 | 229.42 |
| -22 | 2436958 | 1960-01-24 | 229.5 |
| -21 | 2437195 | 1960-09-17 | 230.5 |
| -20 | 2437417 | 1961-04-27 | 230.5 |
| -19 | 2437635 | 1961-12-01 | 230.36 |
| -18 | 2437874 | 1962-07-28 | 229.92 |
| -17 | 2438111 | 1963-03-22 | 229.07 |
| -16 | 2438333 | 1963-10-30 | 230 |
| -15 | 2438571 | 1964-06-24 | 230.79 |
| -14 | 2438801 | 1965-02-09 | 229.72 |
| -13 | 2439018 | 1965-09-14 | 229.35 |
| -12 | 2439254 | 1966-05-08 | 229.28 |
| -11 | 2439486 | 1966-12-26 | 228.86 |
| -10 | 2439715 | 1967-08-12 | 229.5 |
| -9 | 2439940 | 1968-03-24 | 229.86 |
| -8 | 2440174 | 1968-11-13 | 229.5 |
| -7 | 2440402 | 1969-06-29 | 229.64 |
| -6 | 2440630 | 1970-02-12 | 229.72 |
| -5 | 2440860 | 1970-09-30 | 229.29 |
| -4 | 2441093 | 1971-05-21 | 229.57 |
| -3 | 2441323 | 1972-01-06 | 230 |
| -2 | 2441548 | 1972-08-18 | 230 |
| -1 | 2441776 | 1973-04-03 | 230 |
| 0 | 2442014 | 1973-11-27 | 229.93 |
| 1 | 2442238 | 1974-07-09 | 230.22 |
| 2 | 2442472 | 1975-02-28 | 230.57 |
| 3 | 2442701 | 1975-10-15 | 230.14 |
| 4 | 2442934 | 1976-06-04 | 230 |
| 5 | 2443160 | 1977-01-16 | 231 |
| 6 | 2443392 | 1977-09-05 | 231.15 |
| 7 | 2443620 | 1978-04-21 | 231.5 |
| 8 | 2443852 | 1978-12-09 | 232.64 |
| 9 | 2444092 | 1979-08-06 | 233 |
| 10 | 2444317 | 1980-03-18 | 232.93 |
| 11 | 2444559 | 1980-11-15 | 233 |
| 12 | 2444792 | 1981-07-06 | 232.85 |
| 13 | 2445022 | 1982-02-21 | 232.42 |
| 14 | 2445251 | 1982-10-08 | 231.79 |
| 15 | 2445483 | 1983-05-28 | 230.43 |
| 16 | 2445721 | 1984-01-21 | 229.57 |
| 17 | 2445942 | 1984-08-29 | 229.21 |
| 18 | 2446179 | 1985-04-23 | 229.07 |
| 19 | 2446398 | 1985-11-28 | 228.72 |
| 20 | 2446630 | 1986-07-18 | 228.65 |
| 21 | 2446852 | 1987-02-25 | 229.36 |
| 22 | 2447089 | 1987-10-20 | 230 |
| 23 | 2447317 | 1988-06-04 | 230.57 |
| 24 | 2447547 | 1989-01-20 | 231.57 |
| 25 | 2447785 | 1989-09-15 | 231.79 |
| 26 | 2448012 | 1990-04-30 | 231.65 |
| 27 | 2448244 | 1990-12-18 | 232.14 |
| 28 | 2448480 | 1991-08-11 | 231.5 |
| 29 | 2448706 | 1992-03-24 | 231.5 |
| 30 | 2448943 | 1992-11-16 | 231.43 |
| 31 | 2449171 | 1993-07-02 | 231.22 |
| 32 | 2449402 | 1994-02-18 | 231.42 |
| 33 | 2449636 | 1994-10-10 | 231.14 |
| 34 | 2449860 | 1995-05-22 | 231.29 |
| 35 | 2450101 | 1996-01-18 | 231.72 |
| 36 | 2450325 | 1996-08-29 | 231.43 |
| 37 | 2450560 | 1997-04-21 | 231.42 |
| 38 | 2450792 | 1997-12-09 | 231.28 |
| 39 | 2451025 | 1998-07-30 | 231.29 |
| 40 | 2451253 | 1999-03-15 | 231.57 |
| 41 | 2451483 | 1999-10-31 | 231.15 |
| 42 | 2451716 | 2000-06-20 | 231.28 |
| 43 | 2451948 | 2001-02-07 | 232.14 |
| 44 | 2452179 | 2001-09-26 | 233.22 |
| 45 | 2452409 | 2002-05-14 | 233.29 |
| 46 | 2452646 | 2003-01-06 | 233.29 |
| 47 | 2452882 | 2003-08-30 | 233.21 |
| 48 | 2453119 | 2004-04-23 | 233.28 |
| 49 | 2453346 | 2004-12-06 | 233.93 |
| 50 | 2453584 | 2005-08-01 | 234.72 |
| 51 | 2453808 | 2006-03-13 | 233.72 |
| 52 | 2454046 | 2006-11-06 | 232.92 |
| 53 | 2454284 | 2007-07-02 | 233.78 |
| 54 | 2454530 | 2008-03-04 | 234.22 |
| 55 | 2454743 | 2008-10-03 | 233.72 |
| 56 | 2454983 | 2009-05-31 | 232.57 |
| 57 | 2455220 | 2010-01-23 | 231.28 |
| 58 | 2455451 | 2010-09-11 | 231.85 |
| 59 | 2455675 | 2011-04-23 | 231.79 |
| 60 | 2455911 | 2011-12-15 | 229.65 |
| 61 | 2456141 | 2012-08-01 | 229 |
| 62 | 2456378 | 2013-03-26 | 228 |
| 63 | 2456593 | 2013-10-27 | 227.14 |
| 64 | 2456825 | 2014-06-16 | 226.93 |
| 65 | 2457052 | 2015-01-29 | 226.65 |
| 66 | 2457266 | 2015-08-31 | 227.57 |
| 67 | 2457500 | 2016-04-21 | 228.64 |
| 68 | 2457729 | 2016-12-06 | 228.85 |
| 69 | 2457963 | 2017-07-28 | 231.29 |
| 70 | 2458194 | 2018-03-16 | 232.65 |
| 71 | 2458425 | 2018-11-02 | 232.5 |
| 72 | 2458656 | 2019-06-21 | 233.5 |
| 73 | 2458900 | 2020-02-20 | 233.92 |
| 74 | 2459123 | 2020-09-30 | 234.13 |
| 75 | 2459361 | 2021-05-26 | 235.06 |
| 76 | 2459600 | 2022-01-20 | 233.67 |
| 77 | 2459832 | 2022-09-09 | 231.61 |
| 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. |