Daily Sunspot Evaluation
Observation Sheet Friday, 9 May 1980
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)
- 10
- Number of spots (f)
- 71
- Relative number (R)
- 171
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800509.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HSX – 2 | 11 | 67W | 108 | 70W | 4 | |
| 2 | CAE – 7 | 24 | 28W | 69 | 31W | 2.5 | |
| 3 | CAE – 15 | 13 | 11W | 52 | 14W | 6 | |
| 4 | AXX – 1 | -13 | 79W | 120 | 82W | ||
| 5 | EKO – 11 | -20 | 39W | 80 | 42W | 14 | |
| 6 | BXO – 5 | -13 | 13W | 54 | 16W | 3 | |
| 7 | HSX – 1 | -21 | 09E | 32 | 06E | 1.5 | |
| 8 | BXO – 4 | -31 | 39E | 2 | 36E | 8 | |
| 9 | EKC – 23 | -16 | 59E | 342 | 56E | 11.5 | |
| 10 | ? – 2 | -20 | 78E | 323 | 75E | 4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.