| E | O (JD) | O (dat) | Period |
| -96 | 2414910 | 1899-09-12 | 274.11 |
| -95 | 2415184 | 1900-06-13 | 273.66 |
| -94 | 2415455 | 1901-03-11 | 273.71 |
| -92 | 2416001 | 1902-09-08 | 273.75 |
| -91 | 2416275 | 1903-06-09 | 273.36 |
| -90 | 2416559 | 1904-03-19 | 273.19 |
| -88 | 2417096 | 1905-09-07 | 272.87 |
| -87 | 2417373 | 1906-06-11 | 272.5 |
| -86 | 2417647 | 1907-03-12 | 272.17 |
| -84 | 2418185 | 1908-08-31 | 271.18 |
| -83 | 2418459 | 1909-06-01 | 270.23 |
| -82 | 2418727 | 1910-02-24 | 269.59 |
| -80 | 2419270 | 1911-08-21 | 269.06 |
| -79 | 2419545 | 1912-05-22 | 268.6 |
| -76 | 2420342 | 1914-07-28 | 268.18 |
| -75 | 2420606 | 1915-04-18 | 267.4 |
| -74 | 2420870 | 1916-01-07 | 266.88 |
| -73 | 2421144 | 1916-10-07 | 266.22 |
| -72 | 2421409 | 1917-06-29 | 265.49 |
| -71 | 2421675 | 1918-03-22 | 265.08 |
| -69 | 2422200 | 1919-08-29 | 264.98 |
| -68 | 2422469 | 1920-05-24 | 264.57 |
| -67 | 2422735 | 1921-02-14 | 263.64 |
| -66 | 2422990 | 1921-10-27 | 263.36 |
| -65 | 2423255 | 1922-07-19 | 263.34 |
| -64 | 2423526 | 1923-04-16 | 263.56 |
| -62 | 2424050 | 1924-09-21 | 263.63 |
| -61 | 2424302 | 1925-05-31 | 263.94 |
| -58 | 2425098 | 1927-08-05 | 264.09 |
| -57 | 2425366 | 1928-04-29 | 264.22 |
| -56 | 2425635 | 1929-01-23 | 264.95 |
| -54 | 2426161 | 1930-07-03 | 266.02 |
| -53 | 2426429 | 1931-03-28 | 267.41 |
| -51 | 2426950 | 1932-08-30 | 268.33 |
| -50 | 2427222 | 1933-05-29 | 268.95 |
| -49 | 2427508 | 1934-03-11 | 269.72 |
| -47 | 2428040 | 1935-08-25 | 270.76 |
| -46 | 2428324 | 1936-06-04 | 270.8 |
| -45 | 2428590 | 1937-02-25 | 270.92 |
| -43 | 2429127 | 1938-08-16 | 270.51 |
| -42 | 2429401 | 1939-05-17 | 270.34 |
| -41 | 2429675 | 1940-02-15 | 270.62 |
| -40 | 2429930 | 1940-10-27 | 270.95 |
| -39 | 2430201 | 1941-07-25 | 270.98 |
| -38 | 2430480 | 1942-04-30 | 270.87 |
| -37 | 2430760 | 1943-02-04 | 270.5 |
| -35 | 2431296 | 1944-07-24 | 270.39 |
| -34 | 2431579 | 1945-05-03 | 270.48 |
| -33 | 2431830 | 1946-01-09 | 269.99 |
| -32 | 2432100 | 1946-10-06 | 269.38 |
| -31 | 2432368 | 1947-07-01 | 269.53 |
| -30 | 2432640 | 1948-03-29 | 269.84 |
| -28 | 2433181 | 1949-09-21 | 270.21 |
| -27 | 2433452 | 1950-06-19 | 270.63 |
| -26 | 2433720 | 1951-03-14 | 270.5 |
| -24 | 2434270 | 1952-09-14 | 270.42 |
| -23 | 2434535 | 1953-06-06 | 270.3 |
| -8 | 2438590 | 1964-07-13 | 270.13 |
| -4 | 2439680 | 1967-07-08 | 270.02 |
| -1 | 2440480 | 1969-09-15 | 269.79 |
| 0 | 2440749 | 1970-06-11 | 269.53 |
| 3 | 2441555 | 1972-08-25 | 269.29 |
| 4 | 2441817 | 1973-05-14 | 267.93 |
| 6 | 2442360 | 1974-11-08 | 266.92 |
| 7 | 2442614 | 1975-07-20 | 266.72 |
| 8 | 2442890 | 1976-04-21 | 266.45 |
| 9 | 2443155 | 1977-01-11 | 266.37 |
| 10 | 2443417 | 1977-09-30 | 266.57 |
| 11 | 2443678 | 1978-06-18 | 266.49 |
| 12 | 2443950 | 1979-03-17 | 267.09 |
| 13 | 2444217 | 1979-12-09 | 267.27 |
| 14 | 2444489 | 1980-09-06 | 268.35 |
| 15 | 2444754 | 1981-05-29 | 268.87 |
| 16 | 2445020 | 1982-02-19 | 269.33 |
| 17 | 2445290 | 1982-11-16 | 269.05 |
| 18 | 2445562 | 1983-08-15 | 269.05 |
| 19 | 2445840 | 1984-05-19 | 269.25 |
| 20 | 2446100 | 1985-02-03 | 269.37 |
| 21 | 2446373 | 1985-11-03 | 269.16 |
| 22 | 2446635 | 1986-07-23 | 268.62 |
| 23 | 2446906 | 1987-04-20 | 268.05 |
| 24 | 2447181 | 1988-01-20 | 267.7 |
| 25 | 2447446 | 1988-10-11 | 267.91 |
| 26 | 2447712 | 1989-07-04 | 267.74 |
| 27 | 2447977 | 1990-03-26 | 267.82 |
| 28 | 2448244 | 1990-12-18 | 267.6 |
| 29 | 2448513 | 1991-09-13 | 267.61 |
| 30 | 2448782 | 1992-06-08 | 267.89 |
| 31 | 2449050 | 1993-03-03 | 268.03 |
| 32 | 2449318 | 1993-11-26 | 268.24 |
| 33 | 2449586 | 1994-08-21 | 268.24 |
| 34 | 2449856 | 1995-05-18 | 268.07 |
| 35 | 2450122 | 1996-02-08 | 268.05 |
| 36 | 2450389 | 1996-11-01 | 268.28 |
| 37 | 2450660 | 1997-07-30 | 268.33 |
| 38 | 2450927 | 1998-04-23 | 268.21 |
| 39 | 2451193 | 1999-01-14 | 268.09 |
| 40 | 2451463 | 1999-10-11 | 267.9 |
| 41 | 2451736 | 2000-07-10 | 267.56 |
| 42 | 2452001 | 2001-04-01 | 267.59 |
| 43 | 2452266 | 2001-12-22 | 267.57 |
| 44 | 2452534 | 2002-09-16 | 267.63 |
| 45 | 2452798 | 2003-06-07 | 267.67 |
| 46 | 2453064 | 2004-02-28 | 267.35 |
| 47 | 2453340 | 2004-11-30 | 267.92 |
| 48 | 2453604 | 2005-08-21 | 268.94 |
| 49 | 2453874 | 2006-05-18 | 269.07 |
| 50 | 2454144 | 2007-02-12 | 269.26 |
| 51 | 2454402 | 2007-10-28 | 269.36 |
| 52 | 2454682 | 2008-08-03 | 269.27 |
| 53 | 2454963 | 2009-05-11 | 269.28 |
| 54 | 2455218 | 2010-01-21 | 269.3 |
| 55 | 2455488 | 2010-10-18 | 269.34 |
| 56 | 2455760 | 2011-07-17 | 269.4 |
| 57 | 2456029 | 2012-04-11 | 268.8 |
| 58 | 2456293 | 2012-12-31 | 268.6 |
| 59 | 2456567 | 2013-10-01 | 269.2 |
| 60 | 2456836 | 2014-06-27 | 269.04 |
| 61 | 2457105 | 2015-03-23 | 268.73 |
| 62 | 2457373 | 2015-12-16 | 269.2 |
| 63 | 2457640 | 2016-09-08 | 269.43 |
| 64 | 2457912 | 2017-06-07 | 270.08 |
| 65 | 2458179 | 2018-03-01 | 271.34 |
| 66 | 2458444 | 2018-11-21 | 271.67 |
| 67 | 2458726 | 2019-08-30 | 272.17 |
| 68 | 2458991 | 2020-05-21 | 272.73 |
| 69 | 2459276 | 2021-03-02 | 273.23 |
| 70 | 2459557 | 2021-12-08 | 274.11 |
| 71 | 2459812 | 2022-08-20 | 274.8 |
| 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. |