Daily Sunspot Evaluation
Observation Sheet Wednesday, 28 May 1969
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 12
- Number of spots (f)
- 54
- Relative number (R)
- 174
- Observer
- AT
- Reading
- all checks consistent
- File
- 19690528.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 17 | 63E | 199 | |||
| 2 | J – 1 | 9 | 50E | 212 | |||
| 3 | D – 7 | 6 | 58E | 204 | |||
| 4 | A – 1 | -30 | 69W | 331 | |||
| 5 | J – 1 | -27 | 71W | 333 | 1 | ||
| 6 | E – 6 | -22 | 75W | 337 | |||
| 7 | H – 8 | -17 | 58W | 320 | |||
| 8 | H – 6 | -13 | 76W | 338 | |||
| 9 | G – 11 | 9 | 52W | 314 | |||
| 10 | A – 1 | 12 | 38W | 300 | |||
| 11 | C – 10 | 13 | 25W | 287 | |||
| 12 | A – 1 | 13 | 12W | 274 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.