Daily Sunspot Evaluation
Observation Sheet Thursday, 23 February 1967
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)
- 7
- Number of spots (f)
- 40
- Relative number (R)
- 110
- Observer
- LT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 27 | 24 | 55E | 296 | |||
| 2 | H – 3 | -22 | 36E | 315 | |||
| 3 | A – 1 | -24 | 44W | 35 | |||
| 4 | HC – 3 | 14 | 62W | 50 | |||
| 5 | H – 4 | 17 | 32W | 23 | |||
| 6 | J – 1 | 19 | 2W | 70 ⚠ | |||
| 7 | A – 1 | 23 | 16W | 7 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.