Daily Sunspot Evaluation
Observation Sheet Thursday, 7 July 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)
- 9
- Number of spots (f)
- 95
- Relative number (R)
- 185
- Observer
- FY
- Reading
- all checks consistent
- File
- 19600707.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 25 | 0 | ||||
| 2 | B – 14 | 14 | 18E | ||||
| 3 | C – 17 | 14 | 48E | ||||
| 4 | D – 9 | 9 | 18E | ||||
| 5 | J – 2 | -11 | 61E | ||||
| 6 | A – 2 | -9 | 25E | ||||
| 7 | A – 1 | -23 | 1W | ||||
| 8 | F – 45 | 9 | 48W | ||||
| 9 | H – 2 | 28 | 73W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.