Daily Sunspot Evaluation
Observation Sheet Friday, 7 June 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)
- 13
- Number of spots (f)
- 155
- Relative number (R)
- 285
- Observer
- HÇ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19910607.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 6 | 76W | 354 | 79W | 2 | 283 |
| 2 | CAI – 17 | 8 | 05W | 283 | 08W | 5.5 | 266 |
| 3 | CAO – 14 | 20 | 01W | 279 | 04W | 10.5 | 260 |
| 4 | HA – 5 | 8 | 09E | 269 | 06E | 1.5 | 267 |
| 5 | CAO – 20 | 12 | 11E | 267 | 08E | 10.5 | 273 |
| 6 | AX – 4 | 16 | 21E | 257 | 18E | 2.5 | 270 |
| 7 | EKC – 60 | 31 | 31E | 247 | 28E | 13.5 | 271 |
| 8 | HS – 1 | 9 | 39E | 239 | 36E | 2 | 274 |
| 9 | ? – 2 | -10 | 78W | 356 | 81W | 3 | 252 |
| 10 | AX – 2 | -35 | 17E | 261 | 14E | 2 | 280 |
| 11 | BXO – 6 | -13 | 38E | 240 | 35E | 3.5 | 281 |
| 12 | HK – 22 | -18 | 45E | 238 ⚠ | 42E | 6.5 | 277 |
| 13 | AX – 1 | -22 | 72E | 206 | 69E | 1 | 288 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.