Daily Sunspot Evaluation
Observation Sheet Sunday, 21 August 1966
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)
- 6
- Number of spots (f)
- 14
- Relative number (R)
- 74
- Observer
- HıE
- Reading
- all checks consistent
- File
- 19660821.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 43 | 10E | 274 | |||
| 2 | A – 1 | 42 | 73E | 211 | |||
| 3 | A – 3 | 15 | 30E | 254 | |||
| 4 | A – 3 | 15 | 52E | 232 | |||
| 5 | A – 2 | 7 | 08W | 292 | |||
| 6 | A – 3 | 23 | 03W | 287 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.