Daily Sunspot Evaluation
Observation Sheet Sunday, 4 September 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)
- 4
- Number of spots (f)
- 30
- Relative number (R)
- 70
- Observer
- BG
- Reading
- all checks consistent
- File
- 19600904.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 16 | 40E | ||||
| 2 | J – 1 | 22 | 62E | ||||
| 3 | H – 3 | 19 | 66E | ||||
| 4 | E – 20 | 19 | 51W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.