Daily Sunspot Evaluation
Observation Sheet Tuesday, 31 May 1977
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)
- 41
- Relative number (R)
- 61
- Observer
- GA
- Reading
- all checks consistent
- File
- 19770531.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 7 | 20 | 56E | 120 | 53E | ||
| 2 | D – 34 | 21 | 33W | 209 | 36W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.