Daily Sunspot Evaluation
Observation Sheet Thursday, 6 January 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)
- 25
- Relative number (R)
- 75
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720106.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -22 | 33E | 248 | |||
| 2 | J – 2 | -12 | 14E | 264 | |||
| 3 | J – 1 | -5 | 49W | 330 | |||
| 4 | A – 2 | 12 | 73W | 354 | |||
| 5 | D – 19 | 9 | 38W | 319 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.