Daily Sunspot Evaluation
Observation Sheet Friday, 17 February 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)
- 19
- Relative number (R)
- 49
- Observer
- HM
- Reading
- all checks consistent
- File
- 19840217.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 4 | 44 | 83°E | 113 | 83°E | 7° | 2a) |
| 2 | CKO – 10 | -15 | 62W | 258 | 62W | 12 | 2b) |
| 3 | AXX – 5 | -5 | 11E | 185 | 11E | 15 | 2c) |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.