| E | O (JD) | O (dat) | Period |
| -107 | 2413545 | 1895-12-17 | 258.81 |
| -106 | 2413796 | 1896-08-24 | 258.81 |
| -73 | 2422336 | 1920-01-12 | 258.92 |
| -72 | 2422595 | 1920-09-27 | 258.99 |
| -71 | 2422856 | 1921-06-15 | 259.22 |
| -70 | 2423115 | 1922-03-01 | 260.17 |
| -69 | 2423377 | 1922-11-18 | 264.07 |
| -68 | 2423645 | 1923-08-13 | 262.86 |
| -67 | 2423915 | 1924-05-09 | 262.14 |
| -66 | 2424185 | 1925-02-03 | 262.5 |
| -65 | 2424443 | 1925-10-19 | 261.86 |
| -64 | 2424688 | 1926-06-21 | 260.57 |
| -63 | 2424953 | 1927-03-13 | 259.43 |
| -62 | 2425214 | 1927-11-29 | 259.07 |
| -61 | 2425474 | 1928-08-15 | 260.2 |
| -60 | 2425734 | 1929-05-02 | 260.19 |
| -59 | 2425998 | 1930-01-21 | 259.8 |
| -58 | 2426257 | 1930-10-07 | 260.77 |
| -56 | 2426777 | 1932-03-10 | 261.17 |
| -55 | 2427027 | 1932-11-15 | 260.95 |
| -54 | 2427297 | 1933-08-12 | 260.9 |
| -52 | 2427824 | 1935-01-21 | 260.31 |
| -51 | 2428085 | 1935-10-09 | 260.61 |
| -49 | 2428605 | 1937-03-12 | 261.01 |
| -48 | 2428868 | 1937-11-30 | 259.59 |
| -47 | 2429112 | 1938-08-01 | 258.88 |
| -46 | 2429383 | 1939-04-29 | 258.77 |
| -45 | 2429639 | 1940-01-10 | 259.54 |
| -44 | 2429895 | 1940-09-22 | 261.04 |
| -42 | 2430415 | 1942-02-24 | 261.54 |
| -41 | 2430674 | 1942-11-10 | 261.64 |
| -34 | 2432509 | 1947-11-19 | 262.25 |
| -33 | 2432780 | 1948-08-16 | 263.26 |
| -32 | 2433038 | 1949-05-01 | 264.42 |
| -31 | 2433310 | 1950-01-28 | 265.25 |
| -30 | 2433567 | 1950-10-12 | 265.36 |
| -29 | 2433851 | 1951-07-23 | 263.49 |
| -28 | 2434113 | 1952-04-10 | 262.42 |
| -27 | 2434375 | 1952-12-28 | 262.29 |
| -26 | 2434629 | 1953-09-08 | 262.07 |
| -25 | 2434878 | 1954-05-15 | 262 |
| -24 | 2435144 | 1955-02-05 | 262.43 |
| -23 | 2435405 | 1955-10-24 | 262.43 |
| -22 | 2435682 | 1956-07-27 | 263.93 |
| -21 | 2435950 | 1957-04-21 | 264.57 |
| -20 | 2436212 | 1958-01-08 | 263.93 |
| -19 | 2436466 | 1958-09-19 | 262.57 |
| -18 | 2436736 | 1959-06-16 | 260.86 |
| -17 | 2436990 | 1960-02-25 | 260.64 |
| -16 | 2437254 | 1960-11-15 | 261 |
| -15 | 2437509 | 1961-07-28 | 260.29 |
| -14 | 2437775 | 1962-04-20 | 259.64 |
| -13 | 2438036 | 1963-01-06 | 260.14 |
| -12 | 2438296 | 1963-09-23 | 261.21 |
| -11 | 2438550 | 1964-06-03 | 261.28 |
| -10 | 2438811 | 1965-02-19 | 260.5 |
| -9 | 2439075 | 1965-11-10 | 260.57 |
| -8 | 2439345 | 1966-08-07 | 260.92 |
| -7 | 2439597 | 1967-04-16 | 261.29 |
| -6 | 2439861 | 1968-01-05 | 260.72 |
| -5 | 2440119 | 1968-09-19 | 259.43 |
| -4 | 2440380 | 1969-06-07 | 259.43 |
| -3 | 2440639 | 1970-02-21 | 260 |
| -2 | 2440897 | 1970-11-06 | 259.86 |
| -1 | 2441155 | 1971-07-22 | 260.29 |
| 0 | 2441419 | 1972-04-11 | 259.79 |
| 1 | 2441679 | 1972-12-27 | 259.5 |
| 2 | 2441939 | 1973-09-13 | 259.79 |
| 3 | 2442204 | 1974-06-05 | 259.57 |
| 4 | 2442452 | 1975-02-08 | 259.57 |
| 5 | 2442717 | 1975-10-31 | 260.22 |
| 6 | 2442972 | 1976-07-12 | 260.14 |
| 7 | 2443236 | 1977-04-02 | 260.79 |
| 8 | 2443496 | 1977-12-18 | 261.99 |
| 9 | 2443765 | 1978-09-13 | 262.49 |
| 10 | 2444020 | 1979-05-26 | 262.86 |
| 11 | 2444287 | 1980-02-17 | 263.78 |
| 12 | 2444550 | 1980-11-06 | 263.92 |
| 13 | 2444814 | 1981-07-28 | 263.36 |
| 14 | 2445074 | 1982-04-14 | 263.5 |
| 15 | 2445351 | 1983-01-16 | 263.93 |
| 16 | 2445605 | 1983-09-27 | 264 |
| 17 | 2445867 | 1984-06-15 | 263.14 |
| 18 | 2446129 | 1985-03-04 | 261.22 |
| 19 | 2446403 | 1985-12-03 | 260.36 |
| 20 | 2446657 | 1986-08-14 | 260.93 |
| 21 | 2446915 | 1987-04-29 | 260.64 |
| 22 | 2447167 | 1988-01-06 | 259.85 |
| 23 | 2447434 | 1988-09-29 | 259.93 |
| 24 | 2447691 | 1989-06-13 | 260.36 |
| 25 | 2447954 | 1990-03-03 | 261.29 |
| 26 | 2448216 | 1990-11-20 | 262.79 |
| 27 | 2448483 | 1991-08-14 | 264.07 |
| 28 | 2448734 | 1992-04-21 | 264.86 |
| 29 | 2449006 | 1993-01-18 | 262.64 |
| 30 | 2449274 | 1993-10-13 | 260.64 |
| 31 | 2449548 | 1994-07-14 | 261.57 |
| 32 | 2449805 | 1995-03-28 | 261.57 |
| 33 | 2450042 | 1995-11-20 | 260.22 |
| 34 | 2450306 | 1996-08-10 | 258.86 |
| 35 | 2450573 | 1997-05-04 | 258.07 |
| 36 | 2450829 | 1998-01-15 | 260.57 |
| 37 | 2451094 | 1998-10-07 | 262.29 |
| 38 | 2451352 | 1999-06-22 | 260.99 |
| 39 | 2451614 | 2000-03-10 | 261.42 |
| 40 | 2451881 | 2000-12-02 | 262.93 |
| 41 | 2452139 | 2001-08-17 | 263.64 |
| 42 | 2452394 | 2002-04-29 | 264.14 |
| 43 | 2452668 | 2003-01-28 | 264.07 |
| 44 | 2452936 | 2003-10-23 | 264.36 |
| 45 | 2453201 | 2004-07-14 | 265.79 |
| 46 | 2453463 | 2005-04-02 | 266.36 |
| 47 | 2453729 | 2005-12-24 | 265.07 |
| 48 | 2453992 | 2006-09-13 | 264.29 |
| 49 | 2454262 | 2007-06-10 | 265 |
| 50 | 2454529 | 2008-03-03 | 265.29 |
| 51 | 2454786 | 2008-11-15 | 264.72 |
| 52 | 2455051 | 2009-08-07 | 263.57 |
| 53 | 2455323 | 2010-05-06 | 261.79 |
| 54 | 2455583 | 2011-01-21 | 261.36 |
| 55 | 2455844 | 2011-10-09 | 261.22 |
| 56 | 2456100 | 2012-06-21 | 260.29 |
| 57 | 2456356 | 2013-03-04 | 258.79 |
| 58 | 2456618 | 2013-11-21 | 258.14 |
| 59 | 2456876 | 2014-08-06 | 259.07 |
| 60 | 2457142 | 2015-04-29 | 259.22 |
| 61 | 2457387 | 2015-12-30 | 259.42 |
| 62 | 2457654 | 2016-09-22 | 260.42 |
| 63 | 2457917 | 2017-06-12 | 260.57 |
| 64 | 2458168 | 2018-02-18 | 261.07 |
| 65 | 2458438 | 2018-11-15 | 261.29 |
| 66 | 2458702 | 2019-08-06 | 260.57 |
| 67 | 2458964 | 2020-04-24 | 261.47 |
| 68 | 2459220 | 2021-01-05 | 262.29 |
| 69 | 2459479 | 2021-09-21 | 260.26 |
| 70 | 2459740 | 2022-06-09 | 259.51 |
| 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. |