Daily Sunspot Evaluation
Observation Sheet Sunday, 14 July 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)
- 10
- Number of spots (f)
- 34
- Relative number (R)
- 134
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570714.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | 24 | 23E | ||||
| 2 | B – 3 | 23 | 84E | ||||
| 3 | C – 5 | 15 | 66E | ||||
| 4 | J – 1 | -16 | 39E | ||||
| 5 | C – 3 | -35 | 61E | ||||
| 6 | H – 9 | -31 | 3E | ||||
| 7 | G – 3 | -10 | 54W | ||||
| 8 | J – 1 | 35 | 26W | ||||
| 9 | A – 2 | 21 | 8W | ||||
| 10 | A – 3 | 9 | 1W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.