Daily Sunspot Evaluation
Observation Sheet Saturday, 30 January 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)
- 5
- Number of spots (f)
- 13
- Relative number (R)
- 63
- Observer
- HG
- Reading
- all checks consistent
- File
- 19880130.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 6 | 17 | 14E | 218 | 12E | 5 | 22 |
| 2 | DAO – 2 | 18 | 58E | 174 | 56E | 4 | 23 |
| 3 | HAX – 1 | 20 | 74E | 158 | 72E | 3 | 24 |
| 4 | AXX – 1 | -30 | 36W | 268 | 38W | 17 | |
| 5 | AXX – 3 | -26 | 26W | 258 | 28W | 3 | 19 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.