| E | O (JD) | O (dat) | Period |
| -85 | 2416140 | 1903-01-25 | 327.84 |
| -83 | 2416783 | 1904-10-29 | 331.86 |
| -81 | 2417445 | 1906-08-22 | 334.25 |
| -80 | 2417762 | 1907-07-05 | 329.75 |
| -79 | 2418098 | 1908-06-05 | 330.24 |
| -78 | 2418456 | 1909-05-29 | 332.27 |
| -77 | 2418776 | 1910-04-14 | 333.28 |
| -76 | 2419098 | 1911-03-02 | 333 |
| -75 | 2419439 | 1912-02-06 | 330.15 |
| -74 | 2419773 | 1913-01-05 | 328.86 |
| -73 | 2420100 | 1913-11-28 | 330.99 |
| -72 | 2420422 | 1914-10-16 | 332.21 |
| -71 | 2420754 | 1915-09-13 | 332.14 |
| -70 | 2421082 | 1916-08-06 | 331.22 |
| -69 | 2421426 | 1917-07-16 | 330.29 |
| -68 | 2421762 | 1918-06-17 | 331.42 |
| -67 | 2422100 | 1919-05-21 | 332.85 |
| -66 | 2422410 | 1920-03-26 | 332 |
| -65 | 2422736 | 1921-02-15 | 329.72 |
| -64 | 2423080 | 1922-01-25 | 327.93 |
| -63 | 2423416 | 1922-12-27 | 328.92 |
| -62 | 2423740 | 1923-11-16 | 330.07 |
| -61 | 2424064 | 1924-10-05 | 328.86 |
| -60 | 2424389 | 1925-08-26 | 328.72 |
| -59 | 2424726 | 1926-07-29 | 329.14 |
| -58 | 2425041 | 1927-06-09 | 330.14 |
| -57 | 2425379 | 1928-05-12 | 331.35 |
| -56 | 2425719 | 1929-04-17 | 331.43 |
| -55 | 2426045 | 1930-03-09 | 332.29 |
| -54 | 2426381 | 1931-02-08 | 332.22 |
| -53 | 2426711 | 1932-01-04 | 330.42 |
| -52 | 2427044 | 1932-12-02 | 329.99 |
| -51 | 2427375 | 1933-10-29 | 329.22 |
| -50 | 2427696 | 1934-09-15 | 328.87 |
| -49 | 2428028 | 1935-08-13 | 329.57 |
| -48 | 2428356 | 1936-07-06 | 329.42 |
| -47 | 2428679 | 1937-05-25 | 329.99 |
| -46 | 2429017 | 1938-04-28 | 329.93 |
| -45 | 2429352 | 1939-03-29 | 330.29 |
| -44 | 2429679 | 1940-02-19 | 332.36 |
| -43 | 2430012 | 1941-01-17 | 331.92 |
| -42 | 2430331 | 1941-12-02 | 330.78 |
| -41 | 2430677 | 1942-11-13 | 330.79 |
| -40 | 2431011 | 1943-10-13 | 330.15 |
| -39 | 2431332 | 1944-08-29 | 330.29 |
| -38 | 2431668 | 1945-07-31 | 331.64 |
| -37 | 2431994 | 1946-06-22 | 332.14 |
| -36 | 2432319 | 1947-05-13 | 332.86 |
| -35 | 2432648 | 1948-04-06 | 333.15 |
| -34 | 2433003 | 1949-03-27 | 333.22 |
| -33 | 2433335 | 1950-02-22 | 334.78 |
| -32 | 2433668 | 1951-01-21 | 335.78 |
| -31 | 2433996 | 1951-12-15 | 334.43 |
| -30 | 2434331 | 1952-11-14 | 332.79 |
| -29 | 2434669 | 1953-10-18 | 332.5 |
| -28 | 2434999 | 1954-09-13 | 332.35 |
| -27 | 2435334 | 1955-08-14 | 332.14 |
| -26 | 2435663 | 1956-07-08 | 331.5 |
| -25 | 2435995 | 1957-06-05 | 331.58 |
| -24 | 2436322 | 1958-04-28 | 331.29 |
| -23 | 2436655 | 1959-03-27 | 331.64 |
| -22 | 2436986 | 1960-02-21 | 332.64 |
| -21 | 2437324 | 1961-01-24 | 332.14 |
| -20 | 2437647 | 1961-12-13 | 331.79 |
| -19 | 2437993 | 1962-11-24 | 333.22 |
| -18 | 2438322 | 1963-10-19 | 334.07 |
| -17 | 2438645 | 1964-09-06 | 333.99 |
| -16 | 2438977 | 1965-08-04 | 333.72 |
| -15 | 2439329 | 1966-07-22 | 333.87 |
| -14 | 2439658 | 1967-06-16 | 334.93 |
| -13 | 2439989 | 1968-05-12 | 334.28 |
| -12 | 2440323 | 1969-04-11 | 332.28 |
| -11 | 2440666 | 1970-03-20 | 331.14 |
| -10 | 2440990 | 1971-02-07 | 331.51 |
| -9 | 2441312 | 1971-12-26 | 331.57 |
| -8 | 2441646 | 1972-11-24 | 331.64 |
| -7 | 2441977 | 1973-10-21 | 330.99 |
| -6 | 2442311 | 1974-09-20 | 331.79 |
| -5 | 2442643 | 1975-08-18 | 333.15 |
| -4 | 2442989 | 1976-07-29 | 334.57 |
| -3 | 2443301 | 1977-06-06 | 336.71 |
| -2 | 2443646 | 1978-05-17 | 336.64 |
| -1 | 2443976 | 1979-04-12 | 335.07 |
| 0 | 2444331 | 1980-04-01 | 335.58 |
| 1 | 2444671 | 1981-03-07 | 336.22 |
| 2 | 2444996 | 1982-01-26 | 335.07 |
| 3 | 2445327 | 1982-12-23 | 333.57 |
| 4 | 2445661 | 1983-11-22 | 331.29 |
| 5 | 2445993 | 1984-10-19 | 331.08 |
| 6 | 2446320 | 1985-09-11 | 332.14 |
| 7 | 2446657 | 1986-08-14 | 332.64 |
| 8 | 2446983 | 1987-07-06 | 332.42 |
| 9 | 2447319 | 1988-06-06 | 332.14 |
| 10 | 2447654 | 1989-05-07 | 331.94 |
| 11 | 2447991 | 1990-04-09 | 332.93 |
| 12 | 2448317 | 1991-03-01 | 333.49 |
| 13 | 2448646 | 1992-01-24 | 332.28 |
| 14 | 2448978 | 1992-12-21 | 332.29 |
| 15 | 2449323 | 1993-12-01 | 333.01 |
| 16 | 2449648 | 1994-10-22 | 332.22 |
| 17 | 2449977 | 1995-09-16 | 332.49 |
| 18 | 2450320 | 1996-08-24 | 333.07 |
| 19 | 2450650 | 1997-07-20 | 333.07 |
| 20 | 2450964 | 1998-05-30 | 334.08 |
| 21 | 2451315 | 1999-05-16 | 333.43 |
| 22 | 2451649 | 2000-04-14 | 332.78 |
| 23 | 2451985 | 2001-03-16 | 334.35 |
| 24 | 2452317 | 2002-02-11 | 333.86 |
| 25 | 2452648 | 2003-01-08 | 331.72 |
| 26 | 2452981 | 2003-12-07 | 330.86 |
| 27 | 2453314 | 2004-11-04 | 329.99 |
| 28 | 2453639 | 2005-09-25 | 330.57 |
| 29 | 2453969 | 2006-08-21 | 330.5 |
| 30 | 2454297 | 2007-07-15 | 329.22 |
| 31 | 2454625 | 2008-06-07 | 329.79 |
| 32 | 2454968 | 2009-05-16 | 330.64 |
| 33 | 2455288 | 2010-04-01 | 330.78 |
| 34 | 2455616 | 2011-02-23 | 331.79 |
| 35 | 2455954 | 2012-01-27 | 332.51 |
| 36 | 2456283 | 2012-12-21 | 332.86 |
| 37 | 2456614 | 2013-11-17 | 333.42 |
| 38 | 2456953 | 2014-10-22 | 333.28 |
| 39 | 2457295 | 2015-09-29 | 332.72 |
| 40 | 2457621 | 2016-08-20 | 331.72 |
| 41 | 2457951 | 2017-07-16 | 330.86 |
| 42 | 2458285 | 2018-06-15 | 330.64 |
| 43 | 2458610 | 2019-05-06 | 330.42 |
| 44 | 2458931 | 2020-03-22 | 330.19 |
| 45 | 2459268 | 2021-02-22 | 329.21 |
| 46 | 2459609 | 2022-01-29 | 329.25 |
| 47 | 2459933 | 2022-12-19 | 330.08 |
| 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. |