Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 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)
- 15
- Relative number (R)
- 55
- Observer
- GA
- Reading
- all checks consistent
- File
- 19770816.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 32 | 23E | 214 | 20E | ||
| 2 | J – 4 | 28 | 19E | 218 | 16E | ||
| 3 | A – 2 | 21 | 43E | 194 | 40E | ||
| 4 | D – 7 | 20 | 04W | 241 | 07W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.