Daily Sunspot Evaluation
Observation Sheet Tuesday, 8 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)
- 17
- Relative number (R)
- 67
- Observer
- HM
- Reading
- all checks consistent
- File
- 19720208.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -6 | 21E | 186 | |||
| 2 | B – 3 | -8 | 14E | 193 | |||
| 3 | A – 2 | -7 | 67E | 140 | |||
| 4 | C – 9 | -20 | 47W | 254 | |||
| 5 | B – 2 | -6 | 18W | 225 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.