Daily Sunspot Evaluation
Observation Sheet Thursday, 3 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)
- 12
- Number of spots (f)
- 63
- Relative number (R)
- 183
- Observer
- HA
- Reading
- all checks consistent
- File
- 19700903.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 9 | 19 | 05E | 264 | |||
| 2 | E – 30 | 16 | 26E | 243 | |||
| 3 | G – 4 | 22 | 71E | 198 | |||
| 4 | A – 1 | 11 | 24E | 245 | |||
| 5 | J – 1 | 10 | 75E | 194 | |||
| 6 | A – 5 | -5 | 07E | 262 | |||
| 7 | A – 1 | -5 | 02E | 267 | |||
| 8 | A – 3 | 3 | 05 | 274 | |||
| 9 | J – 1 | -11 | 73W | 342 | |||
| 10 | A – 1 | 8 | 80W | 349 | |||
| 11 | A – 2 | 12 | 44W | 313 | |||
| 12 | H – 5 | 21 | 06W | 275 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.