| E | O (JD) | O (dat) | Period |
| -87 | 2414010 | 1897-03-26 | 290.55 |
| -84 | 2414890 | 1899-08-23 | 290.56 |
| -79 | 2416340 | 1903-08-13 | 290.53 |
| -60 | 2421847 | 1918-09-10 | 290.85 |
| -57 | 2422728 | 1921-02-07 | 290.66 |
| -56 | 2423019 | 1921-11-25 | 290.29 |
| -55 | 2423308 | 1922-09-10 | 290.44 |
| -54 | 2423614 | 1923-07-13 | 290.06 |
| -53 | 2423888 | 1924-04-12 | 289.64 |
| -52 | 2424179 | 1925-01-28 | 290.07 |
| -51 | 2424464 | 1925-11-09 | 288.5 |
| -50 | 2424752 | 1926-08-24 | 288.07 |
| -49 | 2425050 | 1927-06-18 | 288.86 |
| -48 | 2425338 | 1928-04-01 | 290.07 |
| -47 | 2425623 | 1929-01-11 | 291.36 |
| -46 | 2425912 | 1929-10-27 | 289 |
| -45 | 2426199 | 1930-08-10 | 286.5 |
| -44 | 2426505 | 1931-06-12 | 285.36 |
| -43 | 2426790 | 1932-03-23 | 285.57 |
| -42 | 2427058 | 1932-12-16 | 287.4 |
| -41 | 2427341 | 1933-09-25 | 287.81 |
| -40 | 2427615 | 1934-06-26 | 287.31 |
| -39 | 2427918 | 1935-04-25 | 289 |
| -37 | 2428504 | 1936-12-01 | 291.31 |
| -36 | 2428805 | 1937-09-28 | 292.52 |
| -35 | 2429087 | 1938-07-07 | 293.1 |
| -34 | 2429385 | 1939-05-01 | 293.24 |
| -33 | 2429675 | 1940-02-15 | 293.11 |
| -25 | 2432009 | 1946-07-07 | 292.93 |
| -24 | 2432317 | 1947-05-11 | 293.21 |
| -23 | 2432609 | 1948-02-27 | 293.64 |
| -22 | 2432907 | 1948-12-21 | 293.76 |
| -21 | 2433187 | 1949-09-27 | 292 |
| -20 | 2433495 | 1950-08-01 | 289.43 |
| -19 | 2433787 | 1951-05-20 | 288.29 |
| -18 | 2434066 | 1952-02-23 | 289.29 |
| -17 | 2434348 | 1952-12-01 | 289.07 |
| -16 | 2434630 | 1953-09-09 | 287 |
| -15 | 2434922 | 1954-06-28 | 287.5 |
| -14 | 2435222 | 1955-04-24 | 288.79 |
| -13 | 2435507 | 1956-02-03 | 289.64 |
| -12 | 2435793 | 1956-11-15 | 290.21 |
| -11 | 2436085 | 1957-09-03 | 289.21 |
| -10 | 2436372 | 1958-06-17 | 288.93 |
| -9 | 2436661 | 1959-04-02 | 290.07 |
| -8 | 2436954 | 1960-01-20 | 290 |
| -7 | 2437239 | 1960-10-31 | 289.79 |
| -6 | 2437535 | 1961-08-23 | 289.86 |
| -5 | 2437826 | 1962-06-10 | 290.29 |
| -4 | 2438112 | 1963-03-23 | 291.21 |
| -3 | 2438402 | 1964-01-07 | 290.93 |
| -2 | 2438689 | 1964-10-20 | 290.21 |
| -1 | 2438990 | 1965-08-17 | 289.93 |
| 0 | 2439280 | 1966-06-03 | 288.86 |
| 1 | 2439567 | 1967-03-17 | 287.93 |
| 2 | 2439857 | 1968-01-01 | 287.14 |
| 3 | 2440140 | 1968-10-10 | 286.36 |
| 4 | 2440418 | 1969-07-15 | 286.43 |
| 5 | 2440704 | 1970-04-27 | 286.29 |
| 6 | 2440995 | 1971-02-12 | 286.5 |
| 7 | 2441284 | 1971-11-28 | 287.79 |
| 8 | 2441573 | 1972-09-12 | 289 |
| 9 | 2441859 | 1973-06-25 | 290.29 |
| 10 | 2442149 | 1974-04-11 | 291.29 |
| 11 | 2442438 | 1975-01-25 | 291.21 |
| 12 | 2442730 | 1975-11-13 | 291.14 |
| 13 | 2443033 | 1976-09-11 | 291.36 |
| 14 | 2443324 | 1977-06-29 | 292.93 |
| 15 | 2443610 | 1978-04-11 | 294.57 |
| 16 | 2443898 | 1979-01-24 | 294.36 |
| 17 | 2444189 | 1979-11-11 | 294.07 |
| 18 | 2444499 | 1980-09-16 | 294.43 |
| 19 | 2444793 | 1981-07-07 | 294.57 |
| 20 | 2445091 | 1982-05-01 | 294.36 |
| 21 | 2445383 | 1983-02-17 | 292.79 |
| 22 | 2445673 | 1983-12-04 | 291.07 |
| 23 | 2445959 | 1984-09-15 | 291 |
| 24 | 2446249 | 1985-07-02 | 290.5 |
| 25 | 2446538 | 1986-04-17 | 289.07 |
| 26 | 2446829 | 1987-02-02 | 288.5 |
| 27 | 2447129 | 1987-11-29 | 288.86 |
| 28 | 2447412 | 1988-09-07 | 289.36 |
| 29 | 2447691 | 1989-06-13 | 290.5 |
| 30 | 2447980 | 1990-03-29 | 290.57 |
| 31 | 2448272 | 1991-01-15 | 290.36 |
| 32 | 2448566 | 1991-11-05 | 291.71 |
| 33 | 2448868 | 1992-09-02 | 292.43 |
| 34 | 2449158 | 1993-06-19 | 292.29 |
| 35 | 2449448 | 1994-04-05 | 292.21 |
| 36 | 2449739 | 1995-01-21 | 291.36 |
| 37 | 2450026 | 1995-11-04 | 290.57 |
| 38 | 2450318 | 1996-08-22 | 291.29 |
| 39 | 2450611 | 1997-06-11 | 292.57 |
| 40 | 2450902 | 1998-03-29 | 293.14 |
| 41 | 2451192 | 1999-01-13 | 293.79 |
| 42 | 2451492 | 1999-11-09 | 293.5 |
| 43 | 2451791 | 2000-09-03 | 292.21 |
| 44 | 2452078 | 2001-06-17 | 294.21 |
| 45 | 2452379 | 2002-04-14 | 295.43 |
| 46 | 2452659 | 2003-01-19 | 294.29 |
| 47 | 2452945 | 2003-11-01 | 294.79 |
| 48 | 2453268 | 2004-09-19 | 294.5 |
| 49 | 2453552 | 2005-06-30 | 294.14 |
| 50 | 2453851 | 2006-04-25 | 294.07 |
| 51 | 2454145 | 2007-02-13 | 292.36 |
| 52 | 2454435 | 2007-11-30 | 291.71 |
| 53 | 2454721 | 2008-09-11 | 291.07 |
| 54 | 2455000 | 2009-06-17 | 289.14 |
| 55 | 2455306 | 2010-04-19 | 288.29 |
| 56 | 2455598 | 2011-02-05 | 289.93 |
| 57 | 2455880 | 2011-11-14 | 290.21 |
| 58 | 2456164 | 2012-08-24 | 287.57 |
| 59 | 2456452 | 2013-06-08 | 286.14 |
| 60 | 2456763 | 2014-04-15 | 286.14 |
| 61 | 2457021 | 2014-12-29 | 286.14 |
| 62 | 2457311 | 2015-10-15 | 286.43 |
| 63 | 2457599 | 2016-07-29 | 283.79 |
| 64 | 2457885 | 2017-05-11 | 282.79 |
| 65 | 2458165 | 2018-02-15 | 283.86 |
| 66 | 2458461 | 2018-12-08 | 282.86 |
| 67 | 2458727 | 2019-08-31 | 283.29 |
| 68 | 2459016 | 2020-06-15 | 283.56 |
| 69 | 2459290 | 2021-03-16 | 281.03 |
| 70 | 2459580 | 2021-12-31 | 281.67 |
| 71 | 2459870 | 2022-10-17 | 284.8 |
| 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. |