| E | O (JD) | O (dat) | Period |
| -95 | 2420929 | 1916-03-06 | 350.9 |
| -94 | 2421272 | 1917-02-12 | 347.93 |
| -93 | 2421579 | 1917-12-16 | 342.66 |
| -92 | 2421955 | 1918-12-27 | 342.18 |
| -91 | 2422311 | 1919-12-18 | 342.71 |
| -89 | 2422992 | 1921-10-29 | 343.52 |
| -84 | 2424681 | 1926-06-14 | 343.48 |
| -74 | 2428125 | 1935-11-18 | 342.69 |
| -73 | 2428470 | 1936-10-28 | 342.73 |
| -72 | 2428809 | 1937-10-02 | 343.17 |
| -71 | 2429151 | 1938-09-09 | 344.35 |
| -70 | 2429508 | 1939-09-01 | 345.29 |
| -69 | 2429847 | 1940-08-05 | 344.79 |
| -68 | 2430180 | 1941-07-04 | 345.43 |
| -67 | 2430546 | 1942-07-05 | 345.07 |
| -66 | 2430883 | 1943-06-07 | 344.29 |
| -65 | 2431223 | 1944-05-12 | 345.43 |
| -64 | 2431573 | 1945-04-27 | 344.57 |
| -63 | 2431917 | 1946-04-06 | 343.79 |
| -62 | 2432258 | 1947-03-13 | 344.71 |
| -61 | 2432605 | 1948-02-23 | 344.29 |
| -60 | 2432945 | 1949-01-28 | 343.71 |
| -59 | 2433297 | 1950-01-15 | 343.29 |
| -58 | 2433635 | 1950-12-19 | 343.29 |
| -57 | 2433981 | 1951-11-30 | 344.07 |
| -56 | 2434321 | 1952-11-04 | 343.64 |
| -55 | 2434660 | 1953-10-09 | 343.71 |
| -54 | 2435009 | 1954-09-23 | 343.71 |
| -53 | 2435358 | 1955-09-07 | 342.79 |
| -52 | 2435695 | 1956-08-09 | 343.29 |
| -51 | 2436049 | 1957-07-29 | 343.14 |
| -50 | 2436379 | 1958-06-24 | 342.71 |
| -49 | 2436722 | 1959-06-02 | 342.71 |
| -48 | 2437065 | 1960-05-10 | 343.14 |
| -47 | 2437408 | 1961-04-18 | 343.36 |
| -46 | 2437757 | 1962-04-02 | 342.79 |
| -45 | 2438094 | 1963-03-05 | 342.36 |
| -44 | 2438454 | 1964-02-28 | 341.86 |
| -43 | 2438781 | 1965-01-20 | 340.93 |
| -42 | 2439119 | 1965-12-24 | 340.79 |
| -41 | 2439461 | 1966-12-01 | 339.93 |
| -40 | 2439798 | 1967-11-03 | 339.57 |
| -39 | 2440140 | 1968-10-10 | 340.5 |
| -38 | 2440482 | 1969-09-17 | 340.93 |
| -37 | 2440825 | 1970-08-26 | 342 |
| -36 | 2441164 | 1971-07-31 | 342.79 |
| -35 | 2441503 | 1972-07-04 | 342.93 |
| -34 | 2441850 | 1973-06-16 | 343 |
| -33 | 2442197 | 1974-05-29 | 342.29 |
| -32 | 2442540 | 1975-05-07 | 341.29 |
| -31 | 2442883 | 1976-04-14 | 341.21 |
| -30 | 2443226 | 1977-03-23 | 340.79 |
| -29 | 2443555 | 1978-02-15 | 340 |
| -28 | 2443890 | 1979-01-16 | 339.71 |
| -27 | 2444240 | 1980-01-01 | 340.14 |
| -26 | 2444578 | 1980-12-04 | 341.07 |
| -25 | 2444919 | 1981-11-10 | 342.5 |
| -24 | 2445260 | 1982-10-17 | 343 |
| -23 | 2445611 | 1983-10-03 | 342.79 |
| -22 | 2445945 | 1984-09-01 | 343.64 |
| -21 | 2446295 | 1985-08-17 | 344 |
| -20 | 2446637 | 1986-07-25 | 343.79 |
| -19 | 2446980 | 1987-07-03 | 343.79 |
| -18 | 2447328 | 1988-06-15 | 343.14 |
| -17 | 2447667 | 1989-05-20 | 343.21 |
| -16 | 2448017 | 1990-05-05 | 344 |
| -15 | 2448352 | 1991-04-05 | 343.43 |
| -14 | 2448692 | 1992-03-10 | 343.36 |
| -13 | 2449045 | 1993-02-26 | 343.36 |
| -12 | 2449388 | 1994-02-04 | 343 |
| -11 | 2449728 | 1995-01-10 | 344.14 |
| -10 | 2450074 | 1995-12-22 | 344.57 |
| -9 | 2450417 | 1996-11-29 | 344.07 |
| -8 | 2450754 | 1997-11-01 | 344.71 |
| -7 | 2451108 | 1998-10-21 | 344.36 |
| -6 | 2451453 | 1999-10-01 | 343.86 |
| -5 | 2451797 | 2000-09-09 | 344.93 |
| -4 | 2452145 | 2001-08-23 | 344.79 |
| -3 | 2452478 | 2002-07-22 | 343.86 |
| -2 | 2452827 | 2003-07-06 | 343.79 |
| -1 | 2453173 | 2004-06-16 | 342.79 |
| 0 | 2453516 | 2005-05-25 | 342.07 |
| 1 | 2453859 | 2006-05-03 | 341.93 |
| 2 | 2454204 | 2007-04-13 | 340.93 |
| 3 | 2454537 | 2008-03-11 | 340 |
| 4 | 2454875 | 2009-02-12 | 339.5 |
| 5 | 2455217 | 2010-01-20 | 339.64 |
| 6 | 2455556 | 2010-12-25 | 340.29 |
| 7 | 2455893 | 2011-11-27 | 341.79 |
| 8 | 2456235 | 2012-11-03 | 342.5 |
| 9 | 2456583 | 2013-10-17 | 342 |
| 10 | 2456922 | 2014-09-21 | 342.5 |
| 11 | 2457275 | 2015-09-09 | 342.43 |
| 12 | 2457612 | 2016-08-11 | 341 |
| 13 | 2457949 | 2017-07-14 | 341.36 |
| 14 | 2458295 | 2018-06-25 | 340.93 |
| 15 | 2458627 | 2019-05-23 | 339.52 |
| 16 | 2458965 | 2020-04-25 | 340.26 |
| 17 | 2459319 | 2021-04-14 | 339.5 |
| 18 | 2459651 | 2022-03-12 | 338.2 |
| 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. |