Daily Sunspot Evaluation
Observation Sheet Thursday, 28 May 1998
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)
- 2
- Number of spots (f)
- 9
- Relative number (R)
- 29
- Observer
- SB0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19980528.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 3 | 18 | 77W | 215 ⚠ | 77W | - | 436 |
| 2 | DSO – 6 | 24 | 42E | 86 ⚠ | 42W | 5 | 9,36 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.