Daily Sunspot Evaluation
Observation Sheet Friday, 11 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)
- 4
- Number of spots (f)
- 55
- Relative number (R)
- 95
- Observer
- HM
- Reading
- all checks consistent
- File
- 19780811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 5 | 16 | 08E | 158 | 05E | ||
| 2 | A – 1 | 19 | 42E | 124 | 39E | ||
| 3 | E – 38 | -27 | 06W | 172 | 09W | ||
| 4 | C – 11 | 15 | 12W | 178 | 15W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.