Daily Sunspot Evaluation
Observation Sheet Sunday, 7 February 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)
- 13
- Relative number (R)
- 43
- Observer
- HG
- Reading
- all checks consistent
- File
- 19880207.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HSX – 1 | 18 | 49W | 175 | 50W | 2.0 | 23 |
| 2 | CAO – 5 | 22 | 30W | 156 | 31W | 4.0 | 24 |
| 3 | CAI – 7 | 28 | 09W | 135 | 10W | 6.5 | 25 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.