Daily Sunspot Evaluation
Observation Sheet Thursday, 13 May 1965
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)
- 3
- Number of spots (f)
- 9
- Relative number (R)
- 39
- Observer
- SK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19650513.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 6 | 26 | 23E | 275 | 5 | ||
| 2 | J – 1 | -3 | 48W | 352 ⚠ | |||
| 3 | A – 2 | 16 | 40W | 314 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.