Daily Sunspot Evaluation
Observation Sheet Thursday, 2 December 1971
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)
- 33
- Relative number (R)
- 93
- Observer
- HM
- Reading
- all checks consistent
- File
- 19711202.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 5 | -5 | 62E | 320 | |||
| 2 | C – 4 | -13 | 13W | 35 | |||
| 3 | E – 12 | -17 | 70W | 92 | |||
| 4 | B – 3 | -11 | 68W | 90 | |||
| 5 | A – 3 | -3 | 74W | 96 | |||
| 6 | C – 6 | 12 | 58W | 80 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.