Daily Sunspot Evaluation
Observation Sheet Saturday, 2 May 1987
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)
- 9
- Relative number (R)
- 39
- Observer
- HM
- Reading
- all checks consistent
- File
- 19870502.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 4 | 2 | 66W | 301 | 66W | 3 | 24 |
| 2 | CAI – 4 | -28 | 45W | 280 | 45W | 6 | 25 |
| 3 | HSX – 1 | -23 | 56E | 179 | 56E | 2 | 26 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.