Daily Sunspot Evaluation
Observation Sheet Monday, 2 September 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)
- 144
- Relative number (R)
- 214
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570902.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 3 | -8 | 70E | ||||
| 2 | H – 14 | -31 | 26W | ||||
| 3 | C – 7 | -17 | 33W | ||||
| 4 | C – 8 | 12 | 59W | ||||
| 5 | J – 1 | 16 | 38W | ||||
| 6 | F – 59 | 15 | 22W | ||||
| 7 | F – 52 | 24 | 22W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.