Daily Sunspot Evaluation
Observation Sheet Saturday, 31 May 1958
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)
- 17
- Number of spots (f)
- 93
- Relative number (R)
- 263
- Observer
- SG
- Reading
- all checks consistent
- File
- 19580531.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 5 | 20 | 7E | ||||
| 2 | H – 3 | 26 | 30E | ||||
| 3 | A – 2 | 28 | 48E | ||||
| 4 | B – 3 | 18 | 34E | ||||
| 5 | H – 1 | 25 | 54E | ||||
| 6 | A – 2 | -22 | 59E | ||||
| 7 | H – 4 | -15 | 19E | ||||
| 8 | A – 1 | -34 | 7E | ||||
| 9 | A – 1 | -31 | 0 | ||||
| 10 | B – 7 | -19 | 10W | ||||
| 11 | B – 14 | -15 | 17W | ||||
| 12 | J – 1 | -15 | 57W | ||||
| 13 | J – 1 | 9 | 57W | ||||
| 14 | A – 3 | 12 | 32W | ||||
| 15 | D – 13 | 17 | 30W | ||||
| 16 | B – 6 | 22 | 22W | ||||
| 17 | D – 26 | 28 | 6W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.