| E | O (JD) | O (dat) | Period |
| -99 | 2414890 | 1899-08-23 | 311.43 |
| -98 | 2415200 | 1900-06-29 | 311.25 |
| -95 | 2416100 | 1902-12-16 | 308.25 |
| -94 | 2416410 | 1903-10-22 | 306.99 |
| -93 | 2416740 | 1904-09-16 | 307.42 |
| -92 | 2417050 | 1905-07-23 | 307.8 |
| -87 | 2418570 | 1909-09-20 | 308.21 |
| -86 | 2418883 | 1910-07-30 | 306.75 |
| -85 | 2419200 | 1911-06-12 | 305.83 |
| -83 | 2419795 | 1913-01-27 | 307.12 |
| -82 | 2420112 | 1913-12-10 | 307.87 |
| -81 | 2420400 | 1914-09-24 | 305.96 |
| -80 | 2420730 | 1915-08-20 | 304.89 |
| -75 | 2422261 | 1919-10-29 | 305.96 |
| -74 | 2422581 | 1920-09-13 | 307.12 |
| -71 | 2423457 | 1923-02-06 | 306.03 |
| -70 | 2423770 | 1923-12-16 | 304.25 |
| -69 | 2424092 | 1924-11-02 | 303.67 |
| -68 | 2424405 | 1925-09-11 | 305.65 |
| -64 | 2425600 | 1928-12-19 | 307.68 |
| -63 | 2425910 | 1929-10-25 | 307.07 |
| -62 | 2426220 | 1930-08-31 | 306.18 |
| -57 | 2427765 | 1934-11-23 | 307.21 |
| -56 | 2428077 | 1935-10-01 | 308.21 |
| -55 | 2428383 | 1936-08-02 | 307.79 |
| -54 | 2428687 | 1937-06-02 | 307.43 |
| -50 | 2429920 | 1940-10-17 | 306.78 |
| -49 | 2430220 | 1941-08-13 | 306.96 |
| -37 | 2433914 | 1951-09-24 | 306.94 |
| -36 | 2434213 | 1952-07-19 | 306.71 |
| -32 | 2435434 | 1955-11-22 | 307.1 |
| -31 | 2435760 | 1956-10-13 | 307.03 |
| -30 | 2436043 | 1957-07-23 | 305.88 |
| -25 | 2437593 | 1961-10-20 | 305.4 |
| -24 | 2437902 | 1962-08-25 | 304.62 |
| -23 | 2438206 | 1963-06-25 | 304.45 |
| -7 | 2443074 | 1976-10-22 | 304.2 |
| -6 | 2443370 | 1977-08-14 | 303.43 |
| -2 | 2444578 | 1980-12-04 | 303.4 |
| -1 | 2444883 | 1981-10-05 | 303.38 |
| 0 | 2445180 | 1982-07-29 | 303.82 |
| 2 | 2445790 | 1984-03-30 | 304.74 |
| 3 | 2446095 | 1985-01-29 | 306.81 |
| 4 | 2446410 | 1985-12-10 | 308.88 |
| 5 | 2446718 | 1986-10-14 | 309.33 |
| 6 | 2447020 | 1987-08-12 | 309.29 |
| 7 | 2447350 | 1988-07-07 | 309.43 |
| 8 | 2447655 | 1989-05-08 | 310.14 |
| 9 | 2447955 | 1990-03-04 | 310.71 |
| 10 | 2448260 | 1991-01-03 | 308.93 |
| 11 | 2448577 | 1991-11-16 | 308.93 |
| 12 | 2448893 | 1992-09-27 | 310 |
| 13 | 2449195 | 1993-07-26 | 310.5 |
| 14 | 2449500 | 1994-05-27 | 312 |
| 15 | 2449830 | 1995-04-22 | 311.57 |
| 16 | 2450120 | 1996-02-06 | 310.36 |
| 17 | 2450442 | 1996-12-24 | 310 |
| 18 | 2450763 | 1997-11-10 | 308.64 |
| 19 | 2451069 | 1998-09-12 | 308.29 |
| 20 | 2451364 | 1999-07-04 | 308.71 |
| 21 | 2451671 | 2000-05-06 | 306.14 |
| 22 | 2451980 | 2001-03-11 | 305.14 |
| 23 | 2452286 | 2002-01-11 | 306.29 |
| 24 | 2452598 | 2002-11-19 | 306.79 |
| 25 | 2452893 | 2003-09-10 | 307.07 |
| 26 | 2453211 | 2004-07-24 | 306.79 |
| 27 | 2453510 | 2005-05-19 | 306 |
| 28 | 2453820 | 2006-03-25 | 306.29 |
| 29 | 2454130 | 2007-01-29 | 305.87 |
| 30 | 2454431 | 2007-11-26 | 304.94 |
| 31 | 2454737 | 2008-09-27 | 304.31 |
| 32 | 2455042 | 2009-07-29 | 303.37 |
| 34 | 2455650 | 2011-03-29 | 303 |
| 35 | 2455950 | 2012-01-23 | 303.19 |
| 36 | 2456249 | 2012-11-17 | 303.88 |
| 37 | 2456555 | 2013-09-19 | 304 |
| 38 | 2456854 | 2014-07-15 | 304.29 |
| 39 | 2457165 | 2015-05-22 | 305.21 |
| 40 | 2457476 | 2016-03-28 | 306 |
| 41 | 2457776 | 2017-01-22 | 306.57 |
| 42 | 2458084 | 2017-11-26 | 305.79 |
| 43 | 2458388 | 2018-09-26 | 304.93 |
| 44 | 2458700 | 2019-08-04 | 305.5 |
| 45 | 2459001 | 2020-05-31 | 305.79 |
| 46 | 2459299 | 2021-03-25 | 305.66 |
| 47 | 2459611 | 2022-01-31 | 304.42 |
| 48 | 2459918 | 2022-12-04 | 302.9 |
| 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. |