Daily Sunspot Evaluation
Observation Sheet Sunday, 7 July 1968
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)
- 3
- Number of spots (f)
- 26
- Relative number (R)
- 56
- Observer
- AT
- Reading
- all checks consistent
- File
- 19680707.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 14 | 12 | 48°E | 182 | |||
| 2 | J – 11 | 11 | 74°E | 156 | |||
| 3 | J – 1 | -16 | 47°E | 183 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.