| E | O (JD) | O (dat) | Period |
| -122 | 2412030 | 1891-10-24 | 235.5 |
| -116 | 2413430 | 1895-08-24 | 235.59 |
| -110 | 2414850 | 1899-07-14 | 235.44 |
| -108 | 2415320 | 1900-10-27 | 235.17 |
| -105 | 2416038 | 1902-10-15 | 235.06 |
| -103 | 2416495 | 1904-01-15 | 235.05 |
| -102 | 2416739 | 1904-09-15 | 234.71 |
| -100 | 2417200 | 1905-12-20 | 233.96 |
| -99 | 2417425 | 1906-08-02 | 233.88 |
| -97 | 2417900 | 1907-11-20 | 233.42 |
| -96 | 2418140 | 1908-07-17 | 233.5 |
| -95 | 2418354 | 1909-02-16 | 233.56 |
| -94 | 2418600 | 1909-10-20 | 234 |
| -91 | 2419310 | 1911-09-30 | 234.2 |
| -88 | 2420000 | 1913-08-20 | 234.11 |
| -86 | 2420465 | 1914-11-28 | 234.33 |
| -84 | 2420940 | 1916-03-17 | 234.34 |
| -83 | 2421180 | 1916-11-12 | 234.28 |
| -80 | 2421880 | 1918-10-13 | 234.34 |
| -77 | 2422580 | 1920-09-12 | 234.89 |
| -74 | 2423290 | 1922-08-23 | 235.29 |
| -73 | 2423510 | 1923-03-31 | 235.61 |
| -72 | 2423760 | 1923-12-06 | 236.1 |
| -69 | 2424458 | 1925-11-03 | 236.6 |
| -66 | 2425175 | 1927-10-21 | 236.89 |
| -64 | 2425655 | 1929-02-12 | 236.91 |
| -60 | 2426600 | 1931-09-15 | 237.14 |
| -58 | 2427080 | 1933-01-07 | 236.96 |
| -55 | 2427785 | 1934-12-13 | 236.96 |
| -54 | 2428020 | 1935-08-05 | 236.61 |
| -53 | 2428250 | 1936-03-22 | 236.34 |
| -52 | 2428498 | 1936-11-25 | 236.09 |
| -51 | 2428731 | 1937-07-16 | 235.82 |
| -50 | 2428960 | 1938-03-02 | 235.5 |
| -49 | 2429202 | 1938-10-30 | 235.04 |
| -48 | 2429439 | 1939-06-24 | 234.65 |
| -47 | 2429670 | 1940-02-10 | 233.46 |
| -46 | 2429908 | 1940-10-05 | 233.81 |
| -45 | 2430133 | 1941-05-18 | 234.02 |
| -44 | 2430367 | 1942-01-07 | 233.18 |
| -43 | 2430603 | 1942-08-31 | 233.53 |
| -41 | 2431061 | 1943-12-02 | 233.83 |
| -40 | 2431311 | 1944-08-08 | 234.29 |
| -39 | 2431545 | 1945-03-30 | 234.98 |
| -38 | 2431760 | 1945-10-31 | 235.33 |
| -37 | 2432013 | 1946-07-11 | 235.94 |
| -36 | 2432243 | 1947-02-26 | 236.27 |
| -35 | 2432484 | 1947-10-25 | 236.27 |
| -33 | 2432954 | 1949-02-06 | 236.36 |
| -32 | 2433191 | 1949-10-01 | 236.31 |
| -30 | 2433669 | 1951-01-22 | 236.11 |
| -27 | 2434372 | 1952-12-25 | 236.39 |
| -22 | 2435557 | 1956-03-24 | 236.52 |
| -21 | 2435788 | 1956-11-10 | 236.55 |
| -20 | 2436018 | 1957-06-28 | 236.52 |
| -19 | 2436264 | 1958-03-01 | 236.5 |
| -18 | 2436510 | 1958-11-02 | 236.93 |
| -17 | 2436748 | 1959-06-28 | 236.85 |
| -16 | 2436974 | 1960-02-09 | 236.83 |
| -15 | 2437211 | 1960-10-03 | 236.28 |
| -14 | 2437448 | 1961-05-28 | 234.97 |
| -13 | 2437688 | 1962-01-23 | 234.57 |
| -12 | 2437918 | 1962-09-10 | 234.1 |
| -11 | 2438156 | 1963-05-06 | 234.43 |
| -10 | 2438387 | 1963-12-23 | 234.15 |
| -9 | 2438614 | 1964-08-06 | 234.22 |
| -8 | 2438858 | 1965-04-07 | 234.21 |
| -7 | 2439080 | 1965-11-15 | 234.79 |
| -6 | 2439326 | 1966-07-19 | 235.55 |
| -5 | 2439557 | 1967-03-07 | 235.92 |
| -4 | 2439797 | 1967-11-02 | 236.1 |
| -3 | 2440028 | 1968-06-20 | 236.02 |
| -2 | 2440269 | 1969-02-16 | 236.76 |
| -1 | 2440513 | 1969-10-18 | 236.22 |
| 0 | 2440738 | 1970-05-31 | 236.25 |
| 1 | 2440973 | 1971-01-21 | 235.9 |
| 2 | 2441212 | 1971-09-17 | 235.81 |
| 3 | 2441457 | 1972-05-19 | 235.2 |
| 4 | 2441682 | 1972-12-30 | 235.54 |
| 5 | 2441920 | 1973-08-25 | 235.99 |
| 6 | 2442153 | 1974-04-15 | 235.88 |
| 7 | 2442390 | 1974-12-08 | 235.75 |
| 8 | 2442620 | 1975-07-26 | 235.85 |
| 9 | 2442870 | 1976-04-01 | 236.38 |
| 10 | 2443100 | 1976-11-17 | 236.52 |
| 11 | 2443335 | 1977-07-10 | 236.25 |
| 12 | 2443572 | 1978-03-04 | 235.79 |
| 13 | 2443810 | 1978-10-28 | 235.84 |
| 14 | 2444045 | 1979-06-20 | 235.75 |
| 15 | 2444284 | 1980-02-14 | 235.85 |
| 16 | 2444510 | 1980-09-27 | 236.04 |
| 17 | 2444744 | 1981-05-19 | 235.91 |
| 18 | 2444989 | 1982-01-19 | 235.98 |
| 19 | 2445230 | 1982-09-17 | 235.97 |
| 20 | 2445456 | 1983-05-01 | 236.55 |
| 21 | 2445699 | 1983-12-30 | 236.97 |
| 22 | 2445930 | 1984-08-17 | 236.44 |
| 23 | 2446169 | 1985-04-13 | 236.09 |
| 24 | 2446401 | 1985-12-01 | 236.73 |
| 25 | 2446650 | 1986-08-07 | 237 |
| 26 | 2446881 | 1987-03-26 | 236.96 |
| 27 | 2447108 | 1987-11-08 | 236.86 |
| 28 | 2447351 | 1988-07-08 | 235.99 |
| 29 | 2447600 | 1989-03-14 | 235.25 |
| 30 | 2447825 | 1989-10-25 | 234.65 |
| 31 | 2448066 | 1990-06-23 | 234.51 |
| 32 | 2448295 | 1991-02-07 | 234.59 |
| 33 | 2448520 | 1991-09-20 | 233.98 |
| 34 | 2448754 | 1992-05-11 | 234.07 |
| 35 | 2448996 | 1993-01-08 | 234.61 |
| 36 | 2449226 | 1993-08-26 | 234.74 |
| 37 | 2449469 | 1994-04-26 | 235.24 |
| 38 | 2449699 | 1994-12-12 | 235.28 |
| 39 | 2449941 | 1995-08-11 | 234.6 |
| 40 | 2450170 | 1996-03-27 | 233.83 |
| 41 | 2450405 | 1996-11-17 | 233.55 |
| 42 | 2450640 | 1997-07-10 | 233.2 |
| 43 | 2450870 | 1998-02-25 | 233.21 |
| 44 | 2451099 | 1998-10-12 | 233.37 |
| 45 | 2451332 | 1999-06-02 | 234.16 |
| 46 | 2451568 | 2000-01-24 | 234.32 |
| 47 | 2451805 | 2000-09-17 | 235.11 |
| 48 | 2452037 | 2001-05-07 | 235.62 |
| 49 | 2452278 | 2002-01-03 | 236.37 |
| 51 | 2452750 | 2003-04-20 | 236.7 |
| 52 | 2452978 | 2003-12-04 | 237.04 |
| 54 | 2453460 | 2005-03-30 | 237.18 |
| 55 | 2453692 | 2005-11-17 | 237.46 |
| 57 | 2454175 | 2007-03-15 | 237.61 |
| 58 | 2454410 | 2007-11-05 | 237.64 |
| 66 | 2456308 | 2013-01-15 | 237.6 |
| 67 | 2456545 | 2013-09-09 | 237.39 |
| 68 | 2456790 | 2014-05-12 | 237.48 |
| 69 | 2457028 | 2015-01-05 | 237.09 |
| 70 | 2457256 | 2015-08-21 | 236.65 |
| 71 | 2457490 | 2016-04-11 | 235.44 |
| 72 | 2457729 | 2016-12-06 | 235.33 |
| 73 | 2457975 | 2017-08-09 | 234.63 |
| 74 | 2458199 | 2018-03-21 | 234.31 |
| 75 | 2458426 | 2018-11-03 | 234.06 |
| 76 | 2458664 | 2019-06-29 | 233.86 |
| 77 | 2458910 | 2020-03-01 | 233.43 |
| 78 | 2459133 | 2020-10-10 | 233.1 |
| 79 | 2459365 | 2021-05-30 | 233.83 |
| 80 | 2459596 | 2022-01-16 | 234 |
| 81 | 2459837 | 2022-09-14 | 233 |
| 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. |