Daily Sunspot Evaluation
Observation Sheet Tuesday, 28 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)
- 5
- Number of spots (f)
- 34
- Relative number (R)
- 84
- Observer
- AÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19840228.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKC – 6 | 16 | 62W | 314 ⚠ | 63W | 5° | 28 |
| 2 | DAC – 8 | 11 | 35W | 87 | 36W | 7 | 30 |
| 3 | AXX – 3 | -11 | 21W | 73 | 22W | 3.25 | 35 |
| 4 | DAC – 16 | -12 | 03E | 49 | 02E | 8 | 36 |
| 5 | AXX – 1 | -15 | 69E | 353 ⚠ | 68E | - | 36 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.