| E | O (JD) | O (dat) | Period |
| -75 | 2414765 | 1899-04-20 | 381.49 |
| -74 | 2415140 | 1900-04-30 | 378.65 |
| -73 | 2415515 | 1901-05-10 | 378.93 |
| -72 | 2415900 | 1902-05-30 | 378.6 |
| -71 | 2416294 | 1903-06-28 | 378.56 |
| -70 | 2416666 | 1904-07-04 | 378.11 |
| -64 | 2418925 | 1910-09-10 | 377.8 |
| -63 | 2419315 | 1911-10-05 | 377.81 |
| -62 | 2419682 | 1912-10-06 | 378.02 |
| -61 | 2420065 | 1913-10-24 | 377.85 |
| -59 | 2420805 | 1915-11-03 | 378.01 |
| -58 | 2421185 | 1916-11-17 | 379.03 |
| -57 | 2421580 | 1917-12-17 | 379.05 |
| -55 | 2422352 | 1920-01-28 | 379.15 |
| -54 | 2422712 | 1921-01-22 | 379.05 |
| -52 | 2423460 | 1923-02-09 | 378.33 |
| -49 | 2424620 | 1926-04-14 | 377.76 |
| -48 | 2424989 | 1927-04-18 | 376.45 |
| -47 | 2425359 | 1928-04-22 | 375.78 |
| -46 | 2425740 | 1929-05-08 | 375.68 |
| -44 | 2426470 | 1931-05-08 | 374.43 |
| -43 | 2426867 | 1932-06-08 | 372.27 |
| -42 | 2427220 | 1933-05-27 | 372.27 |
| -41 | 2427604 | 1934-06-15 | 372.39 |
| -40 | 2427975 | 1935-06-21 | 371.97 |
| -39 | 2428340 | 1936-06-20 | 372.4 |
| -38 | 2428706 | 1937-06-21 | 372.37 |
| -37 | 2429085 | 1938-07-05 | 374.1 |
| -36 | 2429464 | 1939-07-19 | 374.33 |
| -35 | 2429828 | 1940-07-17 | 374.86 |
| -34 | 2430209 | 1941-08-02 | 375.81 |
| -33 | 2430589 | 1942-08-17 | 375.8 |
| -32 | 2430975 | 1943-09-07 | 374.12 |
| -31 | 2431340 | 1944-09-06 | 377.22 |
| -30 | 2431710 | 1945-09-11 | 377.41 |
| -29 | 2432095 | 1946-10-01 | 377.33 |
| -28 | 2432460 | 1947-10-01 | 377.4 |
| -26 | 2433186 | 1949-09-26 | 377.57 |
| -7 | 2440404 | 1969-07-01 | 377.79 |
| -6 | 2440772 | 1970-07-04 | 377.96 |
| -5 | 2441142 | 1971-07-09 | 378.13 |
| -4 | 2441527 | 1972-07-28 | 378.53 |
| -3 | 2441912 | 1973-08-17 | 379.25 |
| -2 | 2442285 | 1974-08-25 | 379.5 |
| -1 | 2442666 | 1975-09-10 | 381.23 |
| 0 | 2443048 | 1976-09-26 | 381.61 |
| 1 | 2443422 | 1977-10-05 | 381.14 |
| 2 | 2443813 | 1978-10-31 | 380.64 |
| 3 | 2444193 | 1979-11-15 | 380.15 |
| 4 | 2444590 | 1980-12-16 | 379.45 |
| 5 | 2444956 | 1981-12-17 | 378.67 |
| 6 | 2445330 | 1982-12-26 | 378.14 |
| 7 | 2445705 | 1984-01-05 | 377.1 |
| 8 | 2446079 | 1985-01-13 | 377.54 |
| 9 | 2446460 | 1986-01-29 | 377.29 |
| 10 | 2446836 | 1987-02-09 | 377.71 |
| 11 | 2447217 | 1988-02-25 | 377.57 |
| 12 | 2447591 | 1989-03-05 | 377.19 |
| 13 | 2447988 | 1990-04-06 | 376.62 |
| 14 | 2448352 | 1991-04-05 | 376.45 |
| 15 | 2448722 | 1992-04-09 | 376.43 |
| 16 | 2449097 | 1993-04-19 | 376.65 |
| 17 | 2449471 | 1994-04-28 | 376.71 |
| 18 | 2449845 | 1995-05-07 | 376.55 |
| 19 | 2450233 | 1996-05-29 | 377.65 |
| 20 | 2450610 | 1997-06-10 | 378.05 |
| 21 | 2450994 | 1998-06-29 | 378.69 |
| 22 | 2451365 | 1999-07-05 | 379.19 |
| 23 | 2451741 | 2000-07-15 | 379.68 |
| 24 | 2452122 | 2001-07-31 | 379.79 |
| 25 | 2452497 | 2002-08-10 | 380.87 |
| 26 | 2452887 | 2003-09-04 | 381.69 |
| 27 | 2453267 | 2004-09-18 | 382.74 |
| 28 | 2453652 | 2005-10-08 | 383.45 |
| 29 | 2454031 | 2006-10-22 | 383.5 |
| 30 | 2454424 | 2007-11-19 | 383.13 |
| 31 | 2454804 | 2008-12-03 | 382.96 |
| 32 | 2455187 | 2009-12-21 | 381.78 |
| 33 | 2455573 | 2011-01-11 | 380.77 |
| 34 | 2455949 | 2012-01-22 | 380.03 |
| 35 | 2456324 | 2013-01-31 | 378.7 |
| 36 | 2456719 | 2014-03-02 | 378.45 |
| 37 | 2457073 | 2015-02-19 | 377.72 |
| 38 | 2457458 | 2016-03-10 | 377.17 |
| 39 | 2457840 | 2017-03-27 | 376.99 |
| 40 | 2458210 | 2018-04-01 | 376.84 |
| 41 | 2458598 | 2019-04-24 | 376.4 |
| 42 | 2458966 | 2020-04-26 | 377.54 |
| 43 | 2459343 | 2021-05-08 | 376.61 |
| 44 | 2459719 | 2022-05-19 | 376.06 |
| 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. |