| E | O (JD) | O (dat) | Period |
| -173 | 2412692 | 1893-08-16 | 189.29 |
| -142 | 2418550 | 1909-08-31 | 189.18 |
| -140 | 2418920 | 1910-09-05 | 189.22 |
| -136 | 2419689 | 1912-10-13 | 189.22 |
| -132 | 2420444 | 1914-11-07 | 189.12 |
| -120 | 2422711 | 1921-01-21 | 189.31 |
| -118 | 2423095 | 1922-02-09 | 189.26 |
| -117 | 2423285 | 1922-08-18 | 188.95 |
| -116 | 2423465 | 1923-02-14 | 188.84 |
| -115 | 2423660 | 1923-08-28 | 188.82 |
| -114 | 2423844 | 1924-02-28 | 188.87 |
| -112 | 2424225 | 1925-03-15 | 188.72 |
| -109 | 2424784 | 1926-09-25 | 188.74 |
| -107 | 2425176 | 1927-10-22 | 189 |
| -105 | 2425548 | 1928-10-28 | 189.27 |
| -103 | 2425920 | 1929-11-04 | 188.86 |
| -101 | 2426301 | 1930-11-20 | 188.62 |
| -99 | 2426684 | 1931-12-08 | 188.48 |
| -97 | 2427063 | 1932-12-21 | 188.57 |
| -22 | 2441210 | 1971-09-15 | 188.56 |
| -20 | 2441570 | 1972-09-09 | 188.51 |
| -18 | 2441950 | 1973-09-24 | 188.47 |
| -16 | 2442330 | 1974-10-09 | 188.22 |
| -14 | 2442700 | 1975-10-14 | 187.8 |
| -12 | 2443085 | 1976-11-02 | 188.66 |
| -10 | 2443456 | 1977-11-08 | 188.22 |
| -8 | 2443827 | 1978-11-14 | 188.16 |
| -4 | 2444587 | 1980-12-13 | 188.48 |
| -2 | 2444970 | 1981-12-31 | 188.59 |
| 0 | 2445333 | 1982-12-29 | 189.3 |
| 2 | 2445718 | 1984-01-18 | 189.78 |
| 3 | 2445910 | 1984-07-28 | 188.84 |
| 4 | 2446100 | 1985-02-03 | 189 |
| 5 | 2446294 | 1985-08-16 | 190.28 |
| 6 | 2446485 | 1986-02-23 | 190.26 |
| 7 | 2446660 | 1986-08-17 | 190.19 |
| 9 | 2447045 | 1987-09-06 | 189.48 |
| 11 | 2447431 | 1988-09-26 | 188.48 |
| 13 | 2447812 | 1989-10-12 | 188.84 |
| 15 | 2448192 | 1990-10-27 | 188.88 |
| 17 | 2448560 | 1991-10-30 | 188.12 |
| 21 | 2449308 | 1993-11-16 | 187.59 |
| 23 | 2449691 | 1994-12-04 | 187.23 |
| 25 | 2450058 | 1995-12-06 | 187.31 |
| 27 | 2450438 | 1996-12-20 | 187.44 |
| 29 | 2450808 | 1997-12-25 | 186.9 |
| 30 | 2451000 | 1998-07-05 | 186.58 |
| 31 | 2451184 | 1999-01-05 | 187.06 |
| 32 | 2451370 | 1999-07-10 | 187.53 |
| 33 | 2451554 | 2000-01-10 | 187.29 |
| 34 | 2451740 | 2000-07-14 | 187.07 |
| 35 | 2451936 | 2001-01-26 | 188.36 |
| 36 | 2452123 | 2001-08-01 | 188.5 |
| 37 | 2452307 | 2002-02-01 | 188.14 |
| 38 | 2452496 | 2002-08-09 | 188.14 |
| 39 | 2452695 | 2003-02-24 | 187.57 |
| 40 | 2452868 | 2003-08-16 | 187.64 |
| 41 | 2453060 | 2004-02-24 | 187.53 |
| 42 | 2453250 | 2004-09-01 | 187.18 |
| 43 | 2453435 | 2005-03-05 | 187.21 |
| 44 | 2453622 | 2005-09-08 | 187.52 |
| 46 | 2453994 | 2006-09-15 | 187.48 |
| 48 | 2454379 | 2007-10-05 | 187.08 |
| 50 | 2454741 | 2008-10-01 | 187.44 |
| 52 | 2455125 | 2009-10-20 | 187.75 |
| 54 | 2455497 | 2010-10-27 | 187.48 |
| 56 | 2455865 | 2011-10-30 | 187.88 |
| 58 | 2456253 | 2012-11-21 | 188.09 |
| 60 | 2456620 | 2013-11-23 | 187.62 |
| 61 | 2456815 | 2014-06-06 | 187.63 |
| 62 | 2457002 | 2014-12-10 | 186.88 |
| 63 | 2457190 | 2015-06-16 | 186.8 |
| 64 | 2457372 | 2015-12-15 | 187.43 |
| 65 | 2457555 | 2016-06-15 | 187 |
| 66 | 2457740 | 2016-12-17 | 187.43 |
| 67 | 2457935 | 2017-06-30 | 188.14 |
| 68 | 2458124 | 2018-01-05 | 188.43 |
| 69 | 2458311 | 2018-07-11 | 189 |
| 70 | 2458505 | 2019-01-21 | 189.07 |
| 71 | 2458691 | 2019-07-26 | 188.29 |
| 72 | 2458874 | 2020-01-25 | 188.21 |
| 73 | 2459067 | 2020-08-05 | 188.29 |
| 74 | 2459255 | 2021-02-09 | 188 |
| 75 | 2459440 | 2021-08-13 | 188.66 |
| 76 | 2459630 | 2022-02-19 | 188.75 |
| 77 | 2459822 | 2022-08-30 | 187.9 |
| 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. |