Daily Sunspot Evaluation
Observation Sheet Sunday, 3 May 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)
- 13
- Number of spots (f)
- 78
- Relative number (R)
- 208
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19810503.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 2 | 15 | 51W | 31 | 51W | 1.5 | 2 |
| 2 | HSX – 1 | 3 | 40W | 20 | 40W | 2.5 | 2 |
| 3 | HSX – 1 | 20 | 00 | 340 | 00 | 2 | |
| 4 | DRC – 27 | 7 | 23E | 317 | 23E | 10.5 | |
| 5 | DKO – 13 | 16 | 26E | 314 | 26E | 9.5 | |
| 6 | BRO – 4 | 5 | 34E | 306 | 34E | 3 | |
| 7 | AXX – 3 | 10 | 39E | 301 | 39E | 2 | 2 |
| 8 | CAO – 5 | 10 | 48E | 292 | 48E | 5.5 | |
| 9 | ARX – 1 | 16 | 50E | 290 | 50E | - | 2 |
| 10 | CRO – 3 | -10 | 57W | 37 | 57W | 7 | |
| 11 | DRI – 14 | -8 | 07E | 333 | 07E | 7 | |
| 12 | AXX – 1 | -11 | 52E | 288 | 52E | - | |
| 13 | CAO – 3 | -20 | 71E | 269 | 71E | 6.5 | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.