Daily Sunspot Evaluation
Observation Sheet Thursday, 16 September 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)
- 4
- Number of spots (f)
- 10
- Relative number (R)
- 50
- Observer
- LT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19650916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 43 | 10W | 79 ⚠ | |||
| 2 | A – 3 | 25 | 26E | 52 | |||
| 3 | C – 3 | 20 | 23E | 55 | |||
| 4 | A – 3 | -1 | 34E | 44 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.