Daily Sunspot Evaluation
Observation Sheet Monday, 15 February 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)
- 5
- Relative number (R)
- 35
- Observer
- SB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19650215.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 22 | 40W | 48 | 4380 | ||
| 2 | A – 2 | 9 | 2W | 42 ⚠ | |||
| 3 | J – 2 | 3 | 4W | 12 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.