Daily Sunspot Evaluation
Observation Sheet Friday, 3 July 1981
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)
- 8
- Number of spots (f)
- 108
- Relative number (R)
- 188
- Observer
- GT
- Reading
- all checks consistent
- File
- 19810703.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXI – 6 | 12 | 67W | 323 | 70W | 7.5 | |
| 2 | HAX – 2 | 18 | 11W | 267 | 14W | 2 | |
| 3 | BXX – 2 | 10 | 09E | 247 | 06E | - | |
| 4 | ? – 6 | -9 | 73W | 329 | 76W | 6 | |
| 5 | DKI – 16 | -6 | 39W | 295 | 42W | 9 | |
| 6 | RXX – 1 | -23 | 25W | 281 | 28W | - | |
| 7 | FKC – 62 | -16 | 23W | 279 | 26W | 22 | |
| 8 | BXI – 13 | -16 | 07W | 263 | 10W | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.