Daily Sunspot Evaluation
Observation Sheet Friday, 13 March 1959
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)
- 12
- Number of spots (f)
- 72
- Relative number (R)
- 192
- Observer
- KA
- Reading
- all checks consistent
- File
- 19590313.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 8 | 23 | 24E | ||||
| 2 | J – 1 | 9 | 20E | ||||
| 3 | E – 13 | 27 | 69E | ||||
| 4 | F – 29 | 12 | 60E | ||||
| 5 | J – 2 | -7 | 31E | ||||
| 6 | B – 4 | -17 | 55E | ||||
| 7 | B – 4 | -15 | 16W | ||||
| 8 | J – 5 | -10 | 82W | ||||
| 9 | A – 1 | 24 | 51W | ||||
| 10 | J – 1 | 7 | 16W | ||||
| 11 | A – 3 | 18 | 4W | ||||
| 12 | J – 1 | 24 | 1W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.