Daily Sunspot Evaluation
Observation Sheet Sunday, 13 March 1988
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)
- 33
- Relative number (R)
- 63
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19880313.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 2 | 22 | 60E | 324 | 59E | 3.25 | 47 |
| 2 | BXO – 2 | -28 | 23E | 1 | 22E | 3 | 49 |
| 3 | FKC – 29 | -24 | 66E | 318 | 65E | 19.25 | 48 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.