Daily Sunspot Evaluation
Observation Sheet Thursday, 20 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)
- 50
- Relative number (R)
- 80
- Observer
- SK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19650520.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 27 | 22 | 12E | 190 | |||
| 2 | C – 8 | 24 | 3E | 174 ⚠ | |||
| 3 | D – 15 | 21 | 49W | 260 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.