Daily Sunspot Evaluation
Observation Sheet Monday, 15 August 1977
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)
- 11
- Relative number (R)
- 51
- Observer
- FA
- Reading
- all checks consistent
- File
- 19770815.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 32 | 36E | 213 | 34E | ||
| 2 | C – 6 | 28 | 36E | 213 | 34E | ||
| 3 | J – 1 | 21 | 56E | 193 | 54E | ||
| 4 | ? – 1 | 22 | 81W | 330 | 83W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.