Daily Sunspot Evaluation
Observation Sheet Wednesday, 2 February 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)
- 5
- Number of spots (f)
- 22
- Relative number (R)
- 72
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720202.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 8 | 19E | 267 | |||
| 2 | D – 7 | -12 | 22W | 308 | |||
| 3 | C – 7 | -16 | 57W | 343 | |||
| 4 | J – 2 | 14 | 39W | 325 | |||
| 5 | B – 5 | 10 | 23W | 309 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.