Daily Sunspot Evaluation
Observation Sheet Monday, 22 March 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)
- 4
- Number of spots (f)
- 34
- Relative number (R)
- 74
- Observer
- FA
- Reading
- all checks consistent
- File
- 19710322.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 19 | 01E | 151 | |||
| 2 | H – 5 | -9 | 26E | 126 | |||
| 3 | D – 25 | -16 | 01W | 153 | |||
| 4 | A – 1 | -5 | 63W | 215 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.