Daily Sunspot Evaluation
Observation Sheet Sunday, 12 May 1963
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)
- 4
- Number of spots (f)
- 10
- Relative number (R)
- 50
- Observer
- AA
- Reading
- all checks consistent
- File
- 19630512.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 11 | 25E | ||||
| 2 | H – 2 | -7 | 33E | ||||
| 3 | J – 1 | -13 | 64W | ||||
| 4 | A – 1 | 9 | 36W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.