Daily Sunspot Evaluation
Observation Sheet Thursday, 7 September 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)
- 7
- Number of spots (f)
- 99
- Relative number (R)
- 169
- Observer
- FY
- Reading
- all checks consistent
- File
- 19780907.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 12 | 34 | 65E | 104 | 62E | ||
| 2 | A – 1 | 27 | 57E | 112 | 54E | ||
| 3 | B – 6 | -17 | 36E | 133 | 33E | ||
| 4 | F – 44 | -33 | 22W | 191 | 25W | ||
| 5 | D – 22 | -23 | 26W | 195 | 29W | ||
| 6 | J – 3 | -24 | 53W | 222 | 56W | ||
| 7 | E – 11 | 15 | 44W | 213 | 47W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.