Daily Sunspot Evaluation
Observation Sheet Thursday, 27 August 1970
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)
- 7
- Number of spots (f)
- 52
- Relative number (R)
- 122
- Observer
- HA
- Reading
- all checks consistent
- File
- 19700827.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 13 | 12 | 04E | 357 | |||
| 2 | D – 7 | 13 | 37E | 324 | |||
| 3 | C – 8 | 13 | 47E | 314 | |||
| 4 | J – 3 | -7 | 20E | 341 | |||
| 5 | C – 8 | -11 | 23E | 338 | |||
| 6 | J – 1 | 4 | 28W | 29 | |||
| 7 | D – 12 | 18 | 41W | 42 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.