Daily Sunspot Evaluation
Observation Sheet Friday, 19 June 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)
- 9
- Number of spots (f)
- 71
- Relative number (R)
- 161
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19810619.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 18 | 80W | 161 | 82W | ||
| 2 | CRO – 14 | 8 | 18W | 99 | 21W | 8.75 | |
| 3 | BXO – 2 | 18 | 02W | 83 | 05W | 4.75 | |
| 4 | DAI – 9 | -25 | 70W | 151 | 73W | 10 | |
| 5 | AXX – 1 | -22 | 48W | 129 | 51W | ||
| 6 | CKO – 5 | -25 | 30W | 111 | 38W | 8.75 | |
| 7 | ERO – 24 | -20 | 15W | 96 | 18W | 13.75 | |
| 8 | AXX – 3 | -5 | 08W | 89 | 11W | 1 | |
| 9 | BRI – 12 | -28 | 30E | 51 | 27E | 4.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.