Daily Sunspot Evaluation
Observation Sheet Friday, 18 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)
- 5
- Number of spots (f)
- 37
- Relative number (R)
- 87
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19780818.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 21 | 13E | 60 | 10E | ||
| 2 | G – 3 | -18 | 42E | 31 | 39E | ||
| 3 | A – 3 | -14 | 08E | 65 | 05E | ||
| 4 | D – 23 | 21 | 48W | 122 | 52W | ||
| 5 | J – 6 | 45 | 06W | 79 | 09W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.