Daily Sunspot Evaluation
Observation Sheet Saturday, 18 March 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)
- 6
- Number of spots (f)
- 25
- Relative number (R)
- 85
- Observer
- SB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670318.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 16 | 15E | 28 ⚠ | |||
| 2 | C – 10 | 23 | 44E | 5 | |||
| 3 | J – 1 | 18 | 54E | 353 | |||
| 4 | J – 1 | 14 | 65E | 342 | |||
| 5 | D – 11 | -17 | 5E | 52 ⚠ | |||
| 6 | J – 1 | 27 | 35W | 82 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.