Daily Sunspot Evaluation
Observation Sheet Monday, 13 February 1984
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)
- 4
- Number of spots (f)
- 33
- Relative number (R)
- 73
- Observer
- HG
- Reading
- all checks consistent
- File
- 19840213.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 1 | -15 | 67W | 318 | 69W | 1 | 23 |
| 2 | EKO – 8 | -10 | 49W | 300 | 51W | 14 | 24 |
| 3 | ARX – 1 | -10 | 29W | 280 | 31W | 1 | 25 |
| 4 | EKC – 23 | -14 | 15W | 266 | 17W | 13 | 26 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.