Daily Sunspot Evaluation
Observation Sheet Tuesday, 31 January 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)
- 5
- Number of spots (f)
- 63
- Relative number (R)
- 113
- Observer
- HG
- Reading
- all checks consistent
- File
- 19840131.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 1 | 16 | 68W | 130 | 70W | 1 | 17 |
| 2 | FKC – 27 | 15 | 51W | 113 | 53W | 18 | 12 |
| 3 | HKI – 21 | 12 | 26W | 88 | 28W | 9 | 13 |
| 4 | BXI – 13 | 13 | 03W | 65 | 05W | 4 | 18 |
| 5 | AXX – 1 | -8 | 74W | 136 | 76W | 1 | 19 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.