Daily Sunspot Evaluation
Observation Sheet Sunday, 16 July 1961
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)
- 5
- Number of spots (f)
- 36
- Relative number (R)
- 86
- Observer
- MH
- Reading
- all checks consistent
- File
- 19610716.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 2 | 12 | 2E | ||||
| 2 | B – 8 | -7 | 48E | ||||
| 3 | A – 1 | -12 | 49W | ||||
| 4 | F – 24 | -8 | 33W | ||||
| 5 | J – 1 | 3 | 54W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.