Daily Sunspot Evaluation
Observation Sheet Monday, 10 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)
- 9
- Number of spots (f)
- 64
- Relative number (R)
- 154
- Observer
- AT
- Reading
- all checks consistent
- File
- 19690310.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 6 | 18 | 16E | 210 | |||
| 2 | C – 12 | 31 | 45E | 181 | |||
| 3 | J – 1 | 8 | 26E | 200 | |||
| 4 | H – 4 | -10 | 52E | 174 | |||
| 5 | A – 1 | -10 | 62E | 164 | |||
| 6 | A – 1 | 4 | 74W | 300 | |||
| 7 | B – 8 | 11 | 61W | 287 | |||
| 8 | D – 17 | 15 | 45W | 271 | |||
| 9 | C – 14 | 13 | 35W | 261 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.