Daily Sunspot Evaluation
Observation Sheet Wednesday, 4 October 1972
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)
- 16
- Relative number (R)
- 76
- Observer
- FA
- Reading
- all checks consistent
- File
- 19721004.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 4 | 18 | 19E | 271 | |||
| 2 | J – 3 | 20 | 48E | 242 | |||
| 3 | A – 2 | -7 | 36E | 254 | |||
| 4 | J – 1 | -8 | 17E | 273 | |||
| 5 | A – 5 | -9 | 48W | 338 | |||
| 6 | J – 1 | 11 | 25W | 315 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.