Daily Sunspot Evaluation
Observation Sheet Thursday, 31 August 1978
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)
- 70
- Relative number (R)
- 170
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780831.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 33 | 20E | 241 | 19E | ||
| 2 | B – 6 | 19 | 12E | 249 | 09E | ||
| 3 | J – 1 | 23 | 20E | 241 | 17E | ||
| 4 | E – 30 | 18 | 58E | 203 | 55E | ||
| 5 | D – 12 | -29 | 65E | 196 | 62E | ||
| 6 | B – 6 | -20 | 43E | 218 | 40E | ||
| 7 | ? – 3 | 9 | 82W | 343 | 85W | ||
| 8 | A – 1 | 19 | 53W | 314 | 56W | ||
| 9 | A – 2 | 20 | 42W | 303 | 45W | ||
| 10 | B – 6 | 16 | 13W | 274 | 16W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.