Daily Sunspot Evaluation
Observation Sheet Monday, 31 March 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)
- 13
- Number of spots (f)
- 114
- Relative number (R)
- 244
- Observer
- FY
- Reading
- all checks consistent
- File
- 19580331.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 1 | 25 | 30E | ||||
| 2 | E – 12 | 33 | 54E | ||||
| 3 | B – 2 | 20 | 58E | ||||
| 4 | C – 11 | 7 | 20E | ||||
| 5 | D – 8 | -17 | 53E | ||||
| 6 | E – 13 | -16 | 27E | ||||
| 7 | F – 22 | -22 | 12W | ||||
| 8 | F – 15 | -12 | 30W | ||||
| 9 | H – 7 | -6 | 57W | ||||
| 10 | J – 3 | -3 | 53W | ||||
| 11 | D – 15 | -6 | 27W | ||||
| 12 | A – 1 | 20 | 57W | ||||
| 13 | B – 4 | 19 | 38W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.