Daily Sunspot Evaluation
Observation Sheet Tuesday, 26 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)
- 7
- Number of spots (f)
- 49
- Relative number (R)
- 119
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570326.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 6 | 33 | 30E | ||||
| 2 | A – 1 | 24 | 45E | ||||
| 3 | J – 1 | 11 | 29E | ||||
| 4 | F – 31 | -15 | 2E | ||||
| 5 | C – 8 | -16 | 37W | ||||
| 6 | J – 1 | 39 | 11W | ||||
| 7 | A – 1 | 28 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.