Daily Sunspot Evaluation
Observation Sheet Friday, 7 September 1984
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
- 19840907.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 5 | 12 | 70W | 107 | 73W | 4 | 161 |
| 2 | AXX – 1 | -12 | 60W | 97 | 63W | - | 157 |
| 3 | BXO – 3 | -6 | 01E | 36 | 02W | 2.5 | 162 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.