Daily Sunspot Evaluation
Observation Sheet Sunday, 18 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)
- 50
- Relative number (R)
- 150
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19690518.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 29 | 04E | 31 | |||
| 2 | ? – 6 | -18 | 78E | 317 | |||
| 3 | J – 1 | -5 | 72W | 107 | |||
| 4 | A – 1 | 11 | 80W | 115 | |||
| 5 | G – 9 | 12 | 63W | 98 | |||
| 6 | J – 2 | 18 | 68W | 103 | |||
| 7 | G – 9 | 17 | 47W | 82 | |||
| 8 | B – 13 | 14 | 36W | 71 | |||
| 9 | A – 5 | 17 | 33W | 68 | |||
| 10 | A – 3 | 29 | 07W | 42 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.