Daily Sunspot Evaluation
Observation Sheet Thursday, 6 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)
- 12
- Number of spots (f)
- 65
- Relative number (R)
- 185
- Observer
- YK
- Reading
- all checks consistent
- File
- 19910606.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 6 | 61W | 352 | 64W | 1 | 253 |
| 2 | DAO – 9 | 19 | 10E | 281 | 07E | 10 | 260 |
| 3 | CAO – 10 | 9 | 10E | 281 | 07E | 7.5 | 256 |
| 4 | HA – 3 | 7 | 21E | 270 | 18E | 1 | 247 |
| 5 | CAO – 11 | 11 | 22E | 269 | 19E | 7.5 | 243 |
| 6 | BXO – 4 | 14 | 31E | 260 | 28E | 6.5 | 240 |
| 7 | DKC – 15 | 31 | 43E | 248 | 40E | 10 | 241 |
| 8 | HA – 1 | 8 | 51E | 240 | 48E | 2 | 244 |
| 9 | AX – 1 | 10 | 58E | 232 | 55E | 249 | |
| 10 | HK – 1 | -13 | 78W | 9 | 81W | 3 | 261 |
| 11 | HA – 2 | -10 | 64W | 355 | 67W | 3 | 252 |
| 12 | HK – 7 | -18 | 57E | 234 | 54E | 4 | 279 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.