Daily Sunspot Evaluation
Observation Sheet Sunday, 13 March 1960
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)
- 6
- Number of spots (f)
- 24
- Relative number (R)
- 84
- Observer
- AB
- Reading
- all checks consistent
- File
- 19600313.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 13 | 31E | ||||
| 2 | ? – 3 | -10 | 76E | ||||
| 3 | D – 14 | -8 | 28W | ||||
| 4 | J – 1 | 24 | 36W | ||||
| 5 | B – 4 | 24 | 28W | ||||
| 6 | J – 1 | 13 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.