Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 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)
- 34
- Relative number (R)
- 94
- Observer
- SM
- Reading
- all checks consistent
- File
- 19690312.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 10 | 31 | 20E | 179 | |||
| 2 | H – 5 | -10 | 26E | 173 | |||
| 3 | D – 7 | -15 | 70E | 129 | |||
| 4 | D – 8 | 13 | 71W | 270 | |||
| 5 | J – 1 | 19 | 12W | 211 | |||
| 6 | J – 3 | 8 | 01W | 200 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.