Daily Sunspot Evaluation
Observation Sheet Tuesday, 2 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)
- 13
- Number of spots (f)
- 66
- Relative number (R)
- 196
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570702.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 5 | 26 | 24E | ||||
| 2 | H – 7 | 11 | 28E | ||||
| 3 | G – 8 | 13 | 42E | ||||
| 4 | ? – 4 | 13 | 74E | ||||
| 5 | J – 1 | -16 | 44E | ||||
| 6 | A – 1 | -17 | 24E | ||||
| 7 | F – 22 | -29 | 40E | ||||
| 8 | J – 1 | -15 | 17E | ||||
| 9 | J – 4 | -10 | 6E | ||||
| 10 | H – 1 | -13 | 2W | ||||
| 11 | A – 1 | -23 | 9W | ||||
| 12 | J – 2 | -16 | 11W | ||||
| 13 | E – 9 | 10 | 27W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.