Daily Sunspot Evaluation
Observation Sheet Friday, 29 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)
- 38
- Relative number (R)
- 118
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570329.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 23 | 7E | ||||
| 2 | A – 3 | 20 | 18E | ||||
| 3 | D – 12 | 13 | 13E | ||||
| 4 | E – 12 | -15 | 39W | ||||
| 5 | C – 5 | 28 | 42W | ||||
| 6 | A – 2 | 29 | 32W | ||||
| 7 | J – 1 | 10 | 12W | ||||
| 8 | A – 1 | 32 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.