Daily Sunspot Evaluation
Observation Sheet Sunday, 31 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)
- 4
- Number of spots (f)
- 33
- Relative number (R)
- 73
- Observer
- TA
- Reading
- all checks consistent
- File
- 19980531.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 11 | 25 | 06E | 95 | 03E | 4 | 86 |
| 2 | BXO – 7 | -22 | 28W | 129 | 31W | 4 | 88 |
| 3 | AX – 2 | -23 | 27E | 74 | 24E | 0.5 | 85 |
| 4 | DRO – 13 | -20 | 59E | 42 | 56E | 8 | 90 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.