Daily Sunspot Evaluation
Observation Sheet Tuesday, 8 September 1970
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)
- 14
- Number of spots (f)
- 129
- Relative number (R)
- 269
- Observer
- FA
- Reading
- all checks consistent
- File
- 19700908.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 7 | 24 | 13°E | 190 | |||
| 2 | J – 1 | 10 | 10°E | 193 | |||
| 3 | A – 2 | -9 | 62°E | 141 | |||
| 4 | G – 6 | -17 | 53°E | 150 | |||
| 5 | B – 8 | -12 | 19°E | 184 | |||
| 6 | A – 6 | -6 | 08°E | 195 | |||
| 7 | J – 1 | -13 | 09°E | 194 | |||
| 8 | C – 10 | -9 | 70°W | 273 | |||
| 9 | H – 54 | 16 | 41°W | 244 | |||
| 10 | D – 18 | 18 | 60°W | 263 | |||
| 11 | A – 6 | 17 | 33°W | 236 | |||
| 12 | J – 1 | 22 | 71°W | 274 | |||
| 13 | G – 7 | 19 | 02°W | 205 | |||
| 14 | A – 2 | 25 | 03°W | 206 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.