Daily Sunspot Evaluation
Observation Sheet Thursday, 8 October 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)
- 4
- Number of spots (f)
- 15
- Relative number (R)
- 55
- Observer
- HM
- Reading
- all checks consistent
- File
- 19871008.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 5 | 29 | 38W | 333 | 40W | 4 | 72 |
| 2 | CAI – 5 | 33 | 02E | 293 | 75 | ||
| 3 | BRO – 2 | -24 | 33E | 262 | 31E | 3 | 77 |
| 4 | BRO – 3 | 21 | 22W | 317 | 24W | 2.5 | 76 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.