Daily Sunspot Evaluation
Observation Sheet Friday, 2 August 1991
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)
- 11
- Number of spots (f)
- 87
- Relative number (R)
- 197
- Observer
- HE
- Reading
- counts consistent, some coordinates doubtful
- File
- 19910802.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 2 | 81W | 338 | 85W | 3 | 394 |
| 2 | HA – 1 | 11 | 80W | 337 | 84W | 2 | 393 |
| 3 | AX – 2 | 22 | 52W | 309 | 56W | 1.5 | 417 |
| 4 | AX – 5 | 14 | 01E | 256 | 03W | 1.5 | 418 |
| 5 | EKI – 46 | 22 | 13E | 244 | 09E | 11.5 | 413 |
| 6 | AX – 2 | 6 | 13E | 244 | 09E | 1 | 419 |
| 7 | HA – 2 | 33 | 42E | 215 | 38E | 1 | 426 |
| 8 | HK – 7 | -18 | 18W | 295 ⚠ | 22W | 4.5 | 407 |
| 9 | DAI – 15 | -17 | 17E | 240 | 13E | 9.5 | 414E |
| 10 | AX – 4 | -12 | 26E | 231 | 22E | 0.5 | 420 |
| 11 | ? – 1 | -31 | 74E | 183 | 70E | 1 | 421 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.