Daily Sunspot Evaluation
Observation Sheet Monday, 12 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)
- 10
- Number of spots (f)
- 52
- Relative number (R)
- 152
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19690512.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 8 | 8 | 06E | 105 | |||
| 2 | C – 11 | 17 | 31E | 80 | |||
| 3 | A – 1 | 10 | 22E | 89 | |||
| 4 | A – 1 | 17 | 40E | 71 | |||
| 5 | B – 5 | 19 | 50E | 61 | |||
| 6 | C – 8 | 13 | 42E | 69 | |||
| 7 | C – 6 | -6 | 11E | 100 | |||
| 8 | J – 3 | -9 | 33E | 78 | |||
| 9 | B – 7 | -17 | 16E | 95 | |||
| 10 | ? – 2 | -14 | 68W | 179 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.