Daily Sunspot Evaluation
Observation Sheet Monday, 17 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)
- 27
- Relative number (R)
- 57
- Observer
- SK
- Reading
- all checks consistent
- File
- 19650517.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 20 | 22 | 51E | 200 | |||
| 2 | ? – 4 | 22 | 74E | 177 | |||
| 3 | C – 3 | 23 | 25W | 276 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.