| E | O (JD) | O (dat) | Period |
| -93 | 2417564 | 1906-12-19 | 227.53 |
| -90 | 2418240 | 1908-10-25 | 227.44 |
| -51 | 2427130 | 1933-02-26 | 227.35 |
| -50 | 2427339 | 1933-09-23 | 227.65 |
| -47 | 2428029 | 1935-08-14 | 227.95 |
| -46 | 2428252 | 1936-03-24 | 227.41 |
| -45 | 2428481 | 1936-11-08 | 223.93 |
| -43 | 2428951 | 1938-02-21 | 224.2 |
| -42 | 2429192 | 1938-10-20 | 225.1 |
| -41 | 2429368 | 1939-04-14 | 225.82 |
| -14 | 2435402 | 1955-10-21 | 225.62 |
| -9 | 2436557 | 1958-12-19 | 225.32 |
| -1 | 2438407 | 1964-01-12 | 225.81 |
| 0 | 2438650 | 1964-09-11 | 227.29 |
| 5 | 2439765 | 1967-10-01 | 228.76 |
| 10 | 2440910 | 1970-11-19 | 227.35 |
| 12 | 2441360 | 1972-02-12 | 226.4 |
| 13 | 2441593 | 1972-10-02 | 226.48 |
| 18 | 2442719 | 1975-11-02 | 226.38 |
| 21 | 2443385 | 1977-08-29 | 226.4 |
| 23 | 2443860 | 1978-12-17 | 225.97 |
| 26 | 2444520 | 1980-10-07 | 226.21 |
| 28 | 2444984 | 1982-01-14 | 227.3 |
| 29 | 2445210 | 1982-08-28 | 226.53 |
| 31 | 2445652 | 1983-11-13 | 226.46 |
| 33 | 2446125 | 1985-02-28 | 227.42 |
| 36 | 2446798 | 1987-01-02 | 227.35 |
| 38 | 2447243 | 1988-03-22 | 228.27 |
| 39 | 2447478 | 1988-11-12 | 228.36 |
| 41 | 2447939 | 1990-02-16 | 227.83 |
| 42 | 2448166 | 1990-10-01 | 229 |
| 44 | 2448631 | 1992-01-09 | 229.5 |
| 45 | 2448855 | 1992-08-20 | 229.05 |
| 47 | 2449308 | 1993-11-16 | 228.77 |
| 49 | 2449771 | 1995-02-22 | 227.73 |
| 50 | 2449999 | 1995-10-08 | 226.61 |
| 52 | 2450457 | 1997-01-08 | 226.48 |
| 53 | 2450681 | 1997-08-20 | 226.36 |
| 55 | 2451126 | 1998-11-08 | 225.13 |
| 57 | 2451572 | 2000-01-28 | 223.43 |
| 58 | 2451800 | 2000-09-12 | 222.86 |
| 60 | 2452259 | 2001-12-15 | 223.1 |
| 62 | 2452689 | 2003-02-18 | 222.45 |
| 63 | 2452906 | 2003-09-23 | 221.95 |
| 64 | 2453135 | 2004-05-09 | 222 |
| 65 | 2453357 | 2004-12-17 | 222.11 |
| 67 | 2453790 | 2006-02-23 | 223.06 |
| 68 | 2454021 | 2006-10-12 | 223.67 |
| 70 | 2454478 | 2008-01-12 | 223.61 |
| 71 | 2454690 | 2008-08-11 | 225.41 |
| 72 | 2454920 | 2009-03-29 | 226.69 |
| 73 | 2455147 | 2009-11-11 | 225.67 |
| 74 | 2455370 | 2010-06-22 | 226.57 |
| 75 | 2455609 | 2011-02-16 | 226.33 |
| 76 | 2455829 | 2011-09-24 | 224.38 |
| 77 | 2456055 | 2012-05-07 | 223.75 |
| 78 | 2456285 | 2012-12-23 | 223.06 |
| 80 | 2456720 | 2014-03-03 | 223.12 |
| 81 | 2456937 | 2014-10-06 | 224.13 |
| 82 | 2457160 | 2015-05-17 | 223.94 |
| 83 | 2457388 | 2015-12-31 | 223.87 |
| 84 | 2457620 | 2016-08-19 | 224.86 |
| 85 | 2457850 | 2017-04-06 | 225.5 |
| 86 | 2458073 | 2017-11-15 | 225.86 |
| 87 | 2458290 | 2018-06-20 | 225.29 |
| 88 | 2458515 | 2019-01-31 | 224.36 |
| 89 | 2458739 | 2019-09-12 | 224.79 |
| 90 | 2458971 | 2020-05-01 | 225.79 |
| 91 | 2459191 | 2020-12-07 | 226.33 |
| 92 | 2459420 | 2021-07-24 | 226.91 |
| 93 | 2459650 | 2022-03-11 | 226.25 |
| 94 | 2459874 | 2022-10-21 | 225.1 |
| 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. |