Daily Sunspot Evaluation
Observation Sheet Saturday, 8 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)
- 10
- Relative number (R)
- 60
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720108.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | -9 | 67E | 189 | |||
| 2 | A – 2 | -9 | 74E | 182 | |||
| 3 | J – 2 | -23 | 09E | 247 | |||
| 4 | J – 1 | -5 | 75W | 331 | |||
| 5 | B – 2 | 8 | 64W | 320 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.