| E | O (JD) | O (dat) | Period |
| -98 | 2411897 | 1891-06-13 | 276.84 |
| -91 | 2413820 | 1896-09-17 | 278.54 |
| -90 | 2414100 | 1897-06-24 | 279.11 |
| -86 | 2415220 | 1900-07-19 | 276.85 |
| -82 | 2416320 | 1903-07-24 | 277.15 |
| -81 | 2416630 | 1904-05-29 | 278.17 |
| -79 | 2417160 | 1905-11-10 | 278.45 |
| -78 | 2417430 | 1906-08-07 | 278 |
| -77 | 2417710 | 1907-05-14 | 277.41 |
| -74 | 2418555 | 1909-09-05 | 278.27 |
| -73 | 2418840 | 1910-06-17 | 278.8 |
| -70 | 2419650 | 1912-09-04 | 278.08 |
| -66 | 2420790 | 1915-10-19 | 277.68 |
| -65 | 2421070 | 1916-07-25 | 277.7 |
| -62 | 2421884 | 1918-10-17 | 279.19 |
| -57 | 2423267 | 1922-07-31 | 279.35 |
| -56 | 2423550 | 1923-05-10 | 278.18 |
| -54 | 2424120 | 1924-11-30 | 278.69 |
| -52 | 2424700 | 1926-07-03 | 279.65 |
| -49 | 2425517 | 1928-09-27 | 279.82 |
| -48 | 2425801 | 1929-07-08 | 278.62 |
| -47 | 2426071 | 1930-04-04 | 276.47 |
| -46 | 2426351 | 1931-01-09 | 276.49 |
| -45 | 2426622 | 1931-10-07 | 277.33 |
| -44 | 2426899 | 1932-07-10 | 276.39 |
| -41 | 2427727 | 1934-10-16 | 276.33 |
| -40 | 2428020 | 1935-08-05 | 276.89 |
| -39 | 2428290 | 1936-05-01 | 277.22 |
| -38 | 2428557 | 1937-01-23 | 277.38 |
| -37 | 2428839 | 1937-11-01 | 276 |
| -36 | 2429118 | 1938-08-07 | 275.07 |
| -35 | 2429393 | 1939-05-09 | 277.23 |
| -34 | 2429671 | 1940-02-11 | 277.27 |
| -33 | 2429940 | 1940-11-06 | 275.96 |
| -32 | 2430221 | 1941-08-14 | 275.54 |
| -28 | 2431339 | 1944-09-05 | 275.87 |
| -25 | 2432157 | 1946-12-02 | 276.46 |
| -24 | 2432423 | 1947-08-25 | 276.5 |
| -23 | 2432701 | 1948-05-29 | 275.81 |
| -22 | 2432984 | 1949-03-08 | 275.69 |
| -21 | 2433262 | 1949-12-11 | 276.64 |
| -20 | 2433535 | 1950-09-10 | 278 |
| -19 | 2433817 | 1951-06-19 | 278.28 |
| -18 | 2434090 | 1952-03-18 | 278 |
| -17 | 2434363 | 1952-12-16 | 278.43 |
| -16 | 2434653 | 1953-10-02 | 278.14 |
| -15 | 2434928 | 1954-07-04 | 278.35 |
| -14 | 2435210 | 1955-04-12 | 279.07 |
| -13 | 2435485 | 1956-01-12 | 277.65 |
| -12 | 2435761 | 1956-10-14 | 276.79 |
| -11 | 2436043 | 1957-07-23 | 277.07 |
| -10 | 2436317 | 1958-04-23 | 277.35 |
| -9 | 2436586 | 1959-01-17 | 277.35 |
| -8 | 2436870 | 1959-10-28 | 277.08 |
| -7 | 2437147 | 1960-07-31 | 277.5 |
| -6 | 2437431 | 1961-05-11 | 278.21 |
| -5 | 2437698 | 1962-02-02 | 278.07 |
| -4 | 2437985 | 1962-11-16 | 278.43 |
| -3 | 2438260 | 1963-08-18 | 278.43 |
| -2 | 2438538 | 1964-05-22 | 277.72 |
| -1 | 2438811 | 1965-02-19 | 277 |
| 0 | 2439104 | 1965-12-09 | 276.64 |
| 1 | 2439372 | 1966-09-03 | 278.14 |
| 2 | 2439645 | 1967-06-03 | 279.29 |
| 3 | 2439916 | 1968-02-29 | 278.79 |
| 4 | 2440202 | 1968-12-11 | 278.14 |
| 5 | 2440490 | 1969-09-25 | 279.64 |
| 6 | 2440769 | 1970-07-01 | 281.43 |
| 7 | 2441049 | 1971-04-07 | 281.86 |
| 8 | 2441321 | 1972-01-04 | 281 |
| 9 | 2441611 | 1972-10-20 | 280.21 |
| 10 | 2441890 | 1973-07-26 | 280.71 |
| 11 | 2442174 | 1974-05-06 | 282.28 |
| 12 | 2442452 | 1975-02-08 | 281.86 |
| 13 | 2442730 | 1975-11-13 | 280.15 |
| 14 | 2443018 | 1976-08-27 | 280 |
| 15 | 2443304 | 1977-06-09 | 280.28 |
| 16 | 2443574 | 1978-03-06 | 280.57 |
| 17 | 2443849 | 1978-12-06 | 279.79 |
| 18 | 2444135 | 1979-09-18 | 279 |
| 19 | 2444415 | 1980-06-24 | 279.57 |
| 20 | 2444695 | 1981-03-31 | 280.14 |
| 21 | 2444970 | 1981-12-31 | 279.71 |
| 22 | 2445258 | 1982-10-15 | 278.86 |
| 23 | 2445534 | 1983-07-18 | 278.58 |
| 24 | 2445811 | 1984-04-20 | 277.93 |
| 25 | 2446089 | 1985-01-23 | 277.85 |
| 26 | 2446365 | 1985-10-26 | 278.5 |
| 27 | 2446645 | 1986-08-02 | 278.36 |
| 28 | 2446911 | 1987-04-25 | 277.93 |
| 29 | 2447207 | 1988-02-15 | 277 |
| 30 | 2447484 | 1988-11-18 | 276.64 |
| 31 | 2447758 | 1989-08-19 | 278 |
| 32 | 2448033 | 1990-05-21 | 277.72 |
| 33 | 2448299 | 1991-02-11 | 275.58 |
| 34 | 2448584 | 1991-11-23 | 275.28 |
| 35 | 2448864 | 1992-08-29 | 276.85 |
| 36 | 2449142 | 1993-06-03 | 278.21 |
| 37 | 2449407 | 1994-02-23 | 277.79 |
| 38 | 2449689 | 1994-12-02 | 276.93 |
| 39 | 2449978 | 1995-09-17 | 277.43 |
| 40 | 2450249 | 1996-06-14 | 279.43 |
| 41 | 2450523 | 1997-03-15 | 280.57 |
| 42 | 2450802 | 1997-12-19 | 279.58 |
| 43 | 2451088 | 1998-10-01 | 279.15 |
| 44 | 2451373 | 1999-07-13 | 279.78 |
| 45 | 2451651 | 2000-04-16 | 280.35 |
| 46 | 2451930 | 2001-01-20 | 280.28 |
| 47 | 2452205 | 2001-10-22 | 279.43 |
| 48 | 2452484 | 2002-07-28 | 278.65 |
| 49 | 2452766 | 2003-05-06 | 278.28 |
| 50 | 2453048 | 2004-02-12 | 279.28 |
| 51 | 2453325 | 2004-11-15 | 280.14 |
| 52 | 2453600 | 2005-08-17 | 279.29 |
| 53 | 2453877 | 2006-05-21 | 278.08 |
| 54 | 2454168 | 2007-03-08 | 277.93 |
| 55 | 2454443 | 2007-12-08 | 278.5 |
| 56 | 2454717 | 2008-09-07 | 278.64 |
| 57 | 2454990 | 2009-06-07 | 277.65 |
| 58 | 2455274 | 2010-03-18 | 276.79 |
| 59 | 2455550 | 2010-12-19 | 278.07 |
| 60 | 2455828 | 2011-09-23 | 278.85 |
| 61 | 2456104 | 2012-06-25 | 278.78 |
| 62 | 2456382 | 2013-03-30 | 279.22 |
| 63 | 2456671 | 2014-01-13 | 279.65 |
| 64 | 2456940 | 2014-10-09 | 279.57 |
| 65 | 2457227 | 2015-07-23 | 279.78 |
| 66 | 2457506 | 2016-04-27 | 279.35 |
| 67 | 2457787 | 2017-02-02 | 279.13 |
| 68 | 2458059 | 2017-11-01 | 279.63 |
| 69 | 2458344 | 2018-08-13 | 279.18 |
| 70 | 2458620 | 2019-05-16 | 278.67 |
| 72 | 2459178 | 2020-11-24 | 279.36 |
| 73 | 2459463 | 2021-09-05 | 279.47 |
| 74 | 2459737 | 2022-06-06 | 278.62 |
| 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. |