Daily Sunspot Evaluation
Observation Sheet Saturday, 22 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)
- 7
- Number of spots (f)
- 43
- Relative number (R)
- 113
- Observer
- ED
- Reading
- all checks consistent
- File
- 19720122.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | -10 | 25E | 48 | |||
| 2 | A – 1 | -14 | 12E | 58 | |||
| 3 | H – 12 | -19 | 21W | 91 | |||
| 4 | G – 8 | -14 | 26W | 96 | |||
| 5 | H – 10 | -17 | 41W | 111 | |||
| 6 | G – 4 | 17 | 54W | 124 | |||
| 7 | D – 5 | 14 | 36W | 106 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.