Daily Sunspot Evaluation
Observation Sheet Friday, 11 March 1983
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)
- 3
- Number of spots (f)
- 13
- Relative number (R)
- 43
- Observer
- OG
- Reading
- all checks consistent
- File
- 19830311.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HSX – 1 | -15 | 82W | 129 | 85W | 2 | 56 |
| 2 | DAO – 5 | -20 | 72W | 119 | 75W | 9 | 58 |
| 3 | DAO – 7 | -1 | 45W | 92 | 48W | 7.5 | 61 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.