Daily Sunspot Evaluation
Observation Sheet Thursday, 7 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)
- 4
- Number of spots (f)
- 24
- Relative number (R)
- 64
- Observer
- HG
- Reading
- counts consistent, some coordinates doubtful
- File
- 19880107.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXI – 15 | 30 | 45E | 129 | 44E | 11 | 5 |
| 2 | ? – 1 | -34 | 80W | 254 | 81W | 1 | 2 |
| 3 | BRI – 6 | -23 | 08W | 182 | 3 | ||
| 4 | BRO – 2 | -25 | 62W | 112 ⚠ | 61E | 5.25 | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.