Daily Sunspot Evaluation
Observation Sheet Tuesday, 5 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)
- 64
- Relative number (R)
- 194
- Observer
- SM
- Reading
- all checks consistent
- File
- 19810505.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 17 | 75W | 32 | 79W | 2 | |
| 2 | HAX – 1 | 4 | 65W | 22 | 69W | 2 | |
| 3 | HAX – 1 | 20 | 23W | 340 | 27W | 2 | |
| 4 | DAO – 21 | 7 | 01E | 316 | 03W | 10 | |
| 5 | CAI – 15 | 16 | 02E | 315 | 02W | 10 | |
| 6 | CAO – 4 | 10 | 26E | 291 | 22E | 5 | |
| 7 | AXX – 4 | 16 | 28E | 289 | 24E | 1.5 | |
| 8 | ? – 1 | 13 | 80E | 237 | 76E | - | |
| 9 | ? – 1 | 8 | 82E | 235 | 78E | - | |
| 10 | DAO – 3 | -7 | 18W | 335 | 22W | 6 | |
| 11 | AXX – 1 | -11 | 28E | 289 | 24E | - | |
| 12 | AXX – 3 | -18 | 34E | 283 | 30E | 2 | |
| 13 | BXO – 8 | -20 | 48E | 269 | 44E | 8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.