Daily Sunspot Evaluation
Observation Sheet Tuesday, 4 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)
- 15
- Number of spots (f)
- 96
- Relative number (R)
- 246
- Observer
- TA
- Reading
- all checks consistent
- File
- 19910604.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 10 | 5 | 32W | 350 | 35W | 7 | 253 |
| 2 | EKO – 11 | 19 | 37E | 281 | 34E | 12 | 260 |
| 3 | CAO – 8 | 9 | 38E | 280 | 35E | 9 | 266 |
| 4 | BRO – 19 | 11 | 48E | 270 | 45E | 5.5 | 272 |
| 5 | HA – 1 | 7 | 48E | 270 | 45E | 1.5 | 267 |
| 6 | BRO – 8 | 14 | 58E | 260 | 55E | 6 | 290 |
| 7 | DKC – 5 | 31 | 67E | 251 | 64E | 9 | 274 |
| 8 | ? – 1 | 8 | 78E | 240 | 75E | 2.5 | 294 |
| 9 | HS – 1 | -14 | 64W | 22 | 67W | 2.5 | 249 |
| 10 | EAC – 22 | -14 | 57W | 15 | 60W | 11 | 261 |
| 11 | AX – 1 | -9 | 45W | 3 | 48W | - | 275 |
| 12 | HK – 2 | -10 | 39W | 357 | 42W | 4 | 252 |
| 13 | AX – 4 | -9 | 02E | 316 | 01W | 1 | 264 |
| 14 | AX – 1 | -10 | 32E | 286 | 29E | - | 296 |
| 15 | ? – 2 | -19 | 81E | 237 | 78E | 4 | 277 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.