Daily Sunspot Evaluation
Observation Sheet Monday, 31 March 1969
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)
- 88
- Relative number (R)
- 148
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19690331.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 54 | 9 | 28E | 277 | |||
| 2 | H – 10 | 20 | 48E | 257 | |||
| 3 | C – 11 | -10 | 27W | 332 | |||
| 4 | A – 2 | -11 | 62W | 7 | |||
| 5 | A – 1 | 10 | 29W | 334 | |||
| 6 | J – 10 | 32 | 02W | 307 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.