Daily Sunspot Evaluation
Observation Sheet Wednesday, 11 March 1970
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)
- 10
- Number of spots (f)
- 75
- Relative number (R)
- 175
- Observer
- SK
- Reading
- all checks consistent
- File
- 19700311.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 14 | 04E | 70 | |||
| 2 | A – 1 | -8 | 24E | 50 | |||
| 3 | J – 2 | -11 | 43E | 31 | |||
| 4 | A – 10 | -15 | 03E | 71 | |||
| 5 | C – 37 | -14 | 08W | 82 | |||
| 6 | D – 12 | -14 | 35W | 109 | |||
| 7 | A – 1 | -15 | 28W | 102 | |||
| 8 | ? – 2 | -18 | 72W | 146 | |||
| 9 | J – 6 | -12 | 47W | 121 | |||
| 10 | H – 2 | 19 | 22W | 96 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.