Daily Sunspot Evaluation
Observation Sheet Friday, 22 March 1957
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)
- 8
- Number of spots (f)
- 28
- Relative number (R)
- 108
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570322.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 34 | 3E | ||||
| 2 | A – 1 | 38 | 42E | ||||
| 3 | A – 2 | 26 | 44E | ||||
| 4 | E – 9 | -14 | 53E | ||||
| 5 | E – 10 | -16 | 18E | ||||
| 6 | C – 2 | -25 | 39W | ||||
| 7 | C – 2 | 12 | 57W | ||||
| 8 | A – 1 | 19 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.