Daily Sunspot Evaluation
Observation Sheet Thursday, 13 September 1962
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)
- 4
- Number of spots (f)
- 19
- Relative number (R)
- 59
- Observer
- MH
- Reading
- all checks consistent
- File
- 19620913.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 14 | 22 | 50E | ||||
| 2 | B – 2 | -9 | 9W | ||||
| 3 | J – 1 | -12 | 54W | ||||
| 4 | ? – 2 | 2 | 25W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.