| E | O (JD) | O (dat) | Period |
| -105 | 2414980 | 1899-11-21 | 263.24 |
| -103 | 2415500 | 1901-04-25 | 262.15 |
| -102 | 2415750 | 1901-12-31 | 260.51 |
| -99 | 2416535 | 1904-02-24 | 261.37 |
| -98 | 2416810 | 1904-11-25 | 261.78 |
| -96 | 2417325 | 1906-04-24 | 261.86 |
| -95 | 2417579 | 1907-01-03 | 263.87 |
| -93 | 2418125 | 1908-07-02 | 265.08 |
| -92 | 2418376 | 1909-03-10 | 265.63 |
| -91 | 2418635 | 1909-11-24 | 266.01 |
| -88 | 2419455 | 1912-02-22 | 266 |
| -84 | 2420517 | 1915-01-19 | 266.44 |
| -83 | 2420790 | 1915-10-19 | 266.71 |
| -81 | 2421296 | 1917-03-08 | 266.93 |
| -80 | 2421590 | 1917-12-27 | 266.61 |
| -78 | 2422105 | 1919-05-26 | 266.43 |
| -77 | 2422374 | 1920-02-19 | 267.41 |
| -74 | 2423190 | 1922-05-15 | 267.8 |
| -70 | 2424247 | 1925-04-06 | 266.7 |
| -69 | 2424520 | 1926-01-04 | 265.64 |
| -66 | 2425321 | 1928-03-15 | 264.43 |
| -65 | 2425599 | 1928-12-18 | 263.15 |
| -63 | 2426097 | 1930-04-30 | 261.4 |
| -62 | 2426351 | 1931-01-09 | 260.21 |
| -59 | 2427146 | 1933-03-14 | 258.48 |
| -58 | 2427396 | 1933-11-19 | 258.13 |
| -56 | 2427906 | 1935-04-13 | 259.55 |
| -55 | 2428180 | 1936-01-12 | 259 |
| -53 | 2428685 | 1937-05-31 | 258.95 |
| -52 | 2428948 | 1938-02-18 | 259.4 |
| -51 | 2429210 | 1938-11-07 | 257.89 |
| -49 | 2429726 | 1940-04-06 | 257.69 |
| -48 | 2429995 | 1940-12-31 | 258.8 |
| -46 | 2430495 | 1942-05-15 | 258.8 |
| -45 | 2430749 | 1943-01-24 | 259.45 |
| -43 | 2431270 | 1944-06-28 | 259.5 |
| -42 | 2431539 | 1945-03-24 | 259.9 |
| -41 | 2431795 | 1945-12-05 | 262.09 |
| -39 | 2432330 | 1947-05-24 | 262.78 |
| -38 | 2432581 | 1948-01-30 | 262.03 |
| -35 | 2433367 | 1950-03-26 | 262.24 |
| -34 | 2433643 | 1950-12-27 | 262.89 |
| -31 | 2434420 | 1953-02-11 | 262.92 |
| -24 | 2436250 | 1958-02-15 | 262.8 |
| -17 | 2438098 | 1963-03-09 | 263 |
| -16 | 2438383 | 1963-12-19 | 263.44 |
| -14 | 2438885 | 1965-05-04 | 264.02 |
| -10 | 2439940 | 1968-03-24 | 263.95 |
| -9 | 2440220 | 1968-12-29 | 262.23 |
| -6 | 2441015 | 1971-03-04 | 262.1 |
| -3 | 2441800 | 1973-04-27 | 263.26 |
| -2 | 2442050 | 1974-01-02 | 261.24 |
| 0 | 2442560 | 1975-05-27 | 258.5 |
| 1 | 2442833 | 1976-02-24 | 257.46 |
| 2 | 2443100 | 1976-11-17 | 257.13 |
| 4 | 2443591 | 1978-03-23 | 257.65 |
| 7 | 2444365 | 1980-05-05 | 257.64 |
| 8 | 2444629 | 1981-01-24 | 256.68 |
| 10 | 2445135 | 1982-06-14 | 257.28 |
| 11 | 2445401 | 1983-03-07 | 259.17 |
| 12 | 2445660 | 1983-11-21 | 260.19 |
| 13 | 2445920 | 1984-08-07 | 261.07 |
| 14 | 2446174 | 1985-04-18 | 262.86 |
| 15 | 2446447 | 1986-01-16 | 263.58 |
| 16 | 2446710 | 1986-10-06 | 263.22 |
| 17 | 2446970 | 1987-06-23 | 263.57 |
| 18 | 2447246 | 1988-03-25 | 264.21 |
| 19 | 2447505 | 1988-12-09 | 265.64 |
| 20 | 2447760 | 1989-08-21 | 265.8 |
| 21 | 2448024 | 1990-05-12 | 264.44 |
| 22 | 2448296 | 1991-02-08 | 264.64 |
| 23 | 2448580 | 1991-11-19 | 265.17 |
| 25 | 2449087 | 1993-04-09 | 265.51 |
| 26 | 2449360 | 1994-01-07 | 264.9 |
| 28 | 2449890 | 1995-06-21 | 263.15 |
| 29 | 2450148 | 1996-03-05 | 263.37 |
| 30 | 2450415 | 1996-11-27 | 264.73 |
| 32 | 2450938 | 1998-05-04 | 265.21 |
| 33 | 2451201 | 1999-01-22 | 266.33 |
| 34 | 2451470 | 1999-10-18 | 265.72 |
| 36 | 2452007 | 2001-04-07 | 266.47 |
| 37 | 2452282 | 2002-01-07 | 269.06 |
| 38 | 2452550 | 2002-10-02 | 269.17 |
| 39 | 2452796 | 2003-06-05 | 269.41 |
| 40 | 2453087 | 2004-03-22 | 269.88 |
| 41 | 2453357 | 2004-12-17 | 269.5 |
| 43 | 2453890 | 2006-06-03 | 270.13 |
| 44 | 2454167 | 2007-03-07 | 269.19 |
| 45 | 2454440 | 2007-12-05 | 266.69 |
| 46 | 2454704 | 2008-08-25 | 265.63 |
| 47 | 2454964 | 2009-05-12 | 265 |
| 48 | 2455226 | 2010-01-29 | 263.41 |
| 49 | 2455485 | 2010-10-15 | 262.06 |
| 51 | 2456012 | 2012-03-25 | 262.11 |
| 52 | 2456285 | 2012-12-23 | 261.94 |
| 54 | 2456800 | 2014-05-22 | 261.28 |
| 55 | 2457061 | 2015-02-07 | 260.53 |
| 56 | 2457325 | 2015-10-29 | 259.07 |
| 57 | 2457580 | 2016-07-10 | 259 |
| 58 | 2457834 | 2017-03-21 | 259.42 |
| 59 | 2458092 | 2017-12-04 | 258.35 |
| 60 | 2458350 | 2018-08-19 | 258.07 |
| 61 | 2458620 | 2019-05-16 | 258.82 |
| 62 | 2458873 | 2020-01-24 | 259.08 |
| 63 | 2459130 | 2020-10-07 | 258.51 |
| 63 | 2459130 | 2020-10-07 | 258.51 |
| 64 | 2459390 | 2021-06-24 | 258.44 |
| 65 | 2459645 | 2022-03-06 | 258.75 |
| 65 | 2459645 | 2022-03-06 | 258.75 |
| 66 | 2459908 | 2022-11-24 | 258.76 |
| 66 | 2459908 | 2022-11-24 | 258.76 |
| 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. |