Daily Sunspot Evaluation
Observation Sheet Monday, 11 March 1968
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)
- 21
- Relative number (R)
- 91
- Observer
- DK
- Reading
- all checks consistent
- File
- 19680311.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 3 | 12 | 74E | 275 | |||
| 2 | C – 3 | -14 | 31E | 318 | |||
| 3 | H – 1 | -28 | 58W | 47 | |||
| 4 | A – 2 | -17 | 42W | 31 | |||
| 5 | A – 5 | -4 | 15W | 4 | |||
| 6 | J – 2 | 13 | 38W | 27 | |||
| 7 | D – 5 | 17 | 05W | 354 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.